PDZ Domain Containing 1 Antibodies

Supplier	Product		Quantity	Reactivity	Applications	Datasheet
FineTest	FNab06298	More Data FNab06298 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ug Hu, Mo, Rt ELISA, IHC-F, IHC-P, WB IHC-F IHC-P WB	100 ug	Hu, Mo, Rt	ELISA, IHC-F, IHC-P, WB	More Data
Santa Cruz Biotechnology	sc-390964 AF488	More Data sc-390964 AF488 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[E-9], Green 200 ug Hu, Mo, Rt FACS, IF, IHC-P, WB	200 ug	Hu, Mo, Rt	FACS, IF, IHC-P, WB	More Data
Origene	TA813175S	More Data TA813175S Mouse Anti-PDZ Domain Containing 1 antibody, Polyclonal 30 ul Hu WB WB	30 ul	Hu	WB	More Data

View 8 Matching ELISA Kits from 2 suppliers

201 PDZ Domain Containing 1 antibodies from 23 antibody suppliers Click each PDZ Domain Containing 1 antibody that interests you to view the full PDZ Domain Containing 1 antibody datasheet.
View only PDZ Domain Containing 1 Monoclonal Antibodies or PDZ Domain Containing 1 Polyclonal Antibodies

Product		Quantity	Reactivity Filter	Applications Filter	Datasheet
FineTest
FNab06298	More Data FNab06298 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ug Hu, Mo, Rt ELISA, IHC-F, IHC-P, WB IHC-F IHC-P WB	100 ug	Hu, Mo, Rt	ELISA, IHC-F, IHC-P, WB	More Data
Santa Cruz Biotechnology
sc-390964 AF488	More Data sc-390964 AF488 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[E-9], Green 200 ug Hu, Mo, Rt FACS, IF, IHC-P, WB	200 ug	Hu, Mo, Rt	FACS, IF, IHC-P, WB	More Data
sc-390964 AF594	More Data sc-390964 AF594 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[E-9], Orange 200 ug Hu, Mo, Rt FACS, IF, IHC-P, WB	200 ug	Hu, Mo, Rt	FACS, IF, IHC-P, WB	More Data
sc-390964 AF790	More Data sc-390964 AF790 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[E-9], near-IR 200 ug Hu, Mo, Rt FACS, IF, WB	200 ug	Hu, Mo, Rt	FACS, IF, WB	More Data
sc-390964 AF546	More Data sc-390964 AF546 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[E-9], Yellow 200 ug Hu, Mo, Rt FACS, IF, IHC-P, WB	200 ug	Hu, Mo, Rt	FACS, IF, IHC-P, WB	More Data
Show more from Santa Cruz Biotechnology
sc-390964 AF647	More Data sc-390964 AF647 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[E-9], Red 200 ug Hu, Mo, Rt FACS, IF, IHC-P, WB	200 ug	Hu, Mo, Rt	FACS, IF, IHC-P, WB	More Data
sc-390964 AF680	More Data sc-390964 AF680 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[E-9], Far-Red 200 ug Hu, Mo, Rt FACS, IF, WB	200 ug	Hu, Mo, Rt	FACS, IF, WB	More Data
sc-398342 AF680	More Data sc-398342 AF680 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[G-3], Far-Red 200 ug Hu, Mo, Rt FACS, IF, WB	200 ug	Hu, Mo, Rt	FACS, IF, WB	More Data
sc-398342 AF790	More Data sc-398342 AF790 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[G-3], near-IR 200 ug Hu, Mo, Rt FACS, IF, WB	200 ug	Hu, Mo, Rt	FACS, IF, WB	More Data
sc-398342 AF488	More Data sc-398342 AF488 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[G-3], Green 200 ug Hu, Mo, Rt FACS, IF, IHC-P, WB	200 ug	Hu, Mo, Rt	FACS, IF, IHC-P, WB	More Data
sc-398342 AF647	More Data sc-398342 AF647 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[G-3], Red 200 ug Hu, Mo, Rt FACS, IF, IHC-P, WB	200 ug	Hu, Mo, Rt	FACS, IF, IHC-P, WB	More Data
sc-398342 AF546	More Data sc-398342 AF546 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[G-3], Yellow 200 ug Hu, Mo, Rt FACS, IF, IHC-P, WB	200 ug	Hu, Mo, Rt	FACS, IF, IHC-P, WB	More Data
sc-398342 AF594	More Data sc-398342 AF594 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[G-3], Orange 200 ug Hu, Mo, Rt FACS, IF, IHC-P, WB	200 ug	Hu, Mo, Rt	FACS, IF, IHC-P, WB	More Data
sc-523754	More Data sc-523754 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[E-9] 1 Kit Hu, Mo, Rt ELISA, IF, IP, WB	1 Kit	Hu, Mo, Rt	ELISA, IF, IP, WB	More Data
sc-100337	More Data sc-100337 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[F-36] 50 ug Hu ELISA, IF, IHC-P, IP, WB	50 ug	Hu	ELISA, IF, IHC-P, IP, WB	More Data
sc-390964	More Data sc-390964 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[E-9] 200 ug Hu, Mo ELISA, IF, IP, WB	200 ug	Hu, Mo	ELISA, IF, IP, WB	More Data
sc-390932	More Data sc-390932 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[H-1] 200 ug Mo, Rt ELISA, IF, IP, WB	200 ug	Mo, Rt	ELISA, IF, IP, WB	More Data
sc-136028	More Data sc-136028 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[42] 50 ug Rt IP, WB	50 ug	Rt	IP, WB	More Data
sc-398342	More Data sc-398342 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[G-3] 200 ug Hu, Mo, Rt ELISA, IF, IP, WB	200 ug	Hu, Mo, Rt	ELISA, IF, IP, WB	More Data
sc-390964 AC	More Data sc-390964 AC Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[sc-390964 AC], Agarose/Sepharose™ 500 ug Hu, Mo, Rt ELISA, IF, IP, WB	500 ug	Hu, Mo, Rt	ELISA, IF, IP, WB	More Data
sc-398342 AC	More Data sc-398342 AC Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[sc-398342 AC], Agarose/Sepharose™ 500 ug Hu, Mo, Rt ELISA, IF, IP, WB	500 ug	Hu, Mo, Rt	ELISA, IF, IP, WB	More Data
sc-390964 HRP	More Data sc-390964 HRP Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[sc-390964 HRP], HRP 200 ug Hu, Mo, Rt ELISA, IF, IP, WB	200 ug	Hu, Mo, Rt	ELISA, IF, IP, WB	More Data
sc-398342 HRP	More Data sc-398342 HRP Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[sc-398342 HRP], HRP 200 ug Hu, Mo, Rt ELISA, IF, IP, WB	200 ug	Hu, Mo, Rt	ELISA, IF, IP, WB	More Data
Origene
TA813175S	More Data TA813175S Mouse Anti-PDZ Domain Containing 1 antibody, Polyclonal 30 ul Hu WB WB	30 ul	Hu	WB	More Data
TA813184S	More Data TA813184S Mouse Anti-PDZ Domain Containing 1 antibody, Polyclonal 30 ul Hu WB WB	30 ul	Hu	WB	More Data
TA813142	More Data TA813142 Mouse Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ul Hu WB WB	100 ul	Hu	WB	More Data
TA813175	More Data TA813175 Mouse Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ul Hu WB WB	100 ul	Hu	WB	More Data
Show more from Origene
TA813142S	More Data TA813142S Mouse Anti-PDZ Domain Containing 1 antibody, Polyclonal 30 ul Hu WB WB	30 ul	Hu	WB	More Data
CF813184	More Data CF813184 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[OTI5H2] 100 ug Hu WB WB	100 ug	Hu	WB	More Data
CF813175	More Data CF813175 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[OTI5H2] 100 ug Hu WB WB	100 ug	Hu	WB	More Data
CF813142	More Data CF813142 Mouse Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ug Hu WB WB	100 ug	Hu	WB	More Data
TA813184	More Data TA813184 Mouse Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ul Hu WB WB	100 ul	Hu	WB	More Data
TA346092	More Data TA346092 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 50 ug Hu WB WB	50 ug	Hu	WB	More Data
AP53250PU-N	More Data AP53250PU-N Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 400 ul Hu WB WB	400 ul	Hu	WB	More Data
TA332609	More Data TA332609 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ug Hu, Mo, Rt WB WB	100 ug	Hu, Mo, Rt	WB	More Data
TA346091	More Data TA346091 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 50 ug Hu WB WB	50 ug	Hu	WB	More Data
AM50029PU-S	More Data AM50029PU-S Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[Clone AT1A2] 50 ul Hu WB WB	50 ul	Hu	WB	More Data
TA336647	More Data TA336647 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ul Bv, Hu, Mo, Rt FACS, ICC, IF, IHC-F, IHC-P, WB WB	100 ul	Bv, Hu, Mo, Rt	FACS, ICC, IF, IHC-F, IHC-P, WB	More Data
AM50029PU-N	More Data AM50029PU-N Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[Clone AT1A2] 100 ul Hu WB WB	100 ul	Hu	WB	More Data
TA363074	More Data TA363074 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ul Mo WB	100 ul	Mo	WB	More Data
TA813184AM	More Data TA813184AM Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[OTI2B2] 100 ul Hu WB	100 ul	Hu	WB	More Data
TA813175BM	More Data TA813175BM Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[OTI8H8] 100 ul Hu WB	100 ul	Hu	WB	More Data
TA813184BM	More Data TA813184BM Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[OTI2B2] 100 ul Hu WB	100 ul	Hu	WB	More Data
TA813175AM	More Data TA813175AM Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[OTI8H8] 100 ul Hu WB	100 ul	Hu	WB	More Data
TA813142AM	More Data TA813142AM Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[OTI2B4] 100 ul Hu WB	100 ul	Hu	WB	More Data
TA813142BM	More Data TA813142BM Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[OTI2B4] 100 ul Hu WB	100 ul	Hu	WB	More Data
Sino Biological
202029-T10	More Data 202029-T10 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 200 ul Hu ICC, IF, IHC-F, IHC-P IHC-F IHC-P	200 ul	Hu	ICC, IF, IHC-F, IHC-P	More Data
Merck
HPA006155	More Data HPA006155 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 1 Vial Hu, Mo, Rt	1 Vial	Hu, Mo, Rt		More Data
Atlas Antibodies
HPA006155	More Data HPA006155 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ul Hu, Mo, Rt ICC, IF, IHC-F, IHC-P, WB ICC IF IHC-F IHC-P WB	100 ul	Hu, Mo, Rt	ICC, IF, IHC-F, IHC-P, WB	More Data
HPA005755	More Data HPA005755 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ul Hu ICC, IF, IHC-F, IHC-P, WB ICC IF IHC-F IHC-P WB	100 ul	Hu	ICC, IF, IHC-F, IHC-P, WB	More Data
Epigentek
A54413-050	More Data A54413-050 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 50 ug Hu ELISA	50 ug	Hu	ELISA	More Data
A54414-050	More Data A54414-050 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal, Biotin 50 ug Hu ELISA	50 ug	Hu	ELISA	More Data
A54413-020	More Data A54413-020 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 20 ug Hu ELISA	20 ug	Hu	ELISA	More Data
A54415-050	More Data A54415-050 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal, FITC 50 ug Hu ELISA	50 ug	Hu	ELISA	More Data
Show more from Epigentek
A54416-050	More Data A54416-050 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal, HRP 50 ug Hu ELISA	50 ug	Hu	ELISA	More Data
A54414-100	More Data A54414-100 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal, Biotin 100 ug Hu ELISA	100 ug	Hu	ELISA	More Data
A54413-100	More Data A54413-100 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ug Hu ELISA	100 ug	Hu	ELISA	More Data
A54416-100	More Data A54416-100 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal, HRP 100 ug Hu ELISA	100 ug	Hu	ELISA	More Data
A54415-100	More Data A54415-100 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal, FITC 100 ug Hu ELISA	100 ug	Hu	ELISA	More Data
Abcam
ab121248	More Data ab121248 Rabbit Anti-Clamp antibody, Polyclonal 100 ul Hu IHC-P IHC-P	100 ul	Hu	IHC-P	More Data
United States Biological
039865-APC	More Data 039865-APC Rabbit Anti-PDZ Domain Containing 1 antibody, Monoclonal[039865-APC] 200 ul Hu ELISA, IHC-F, IHC-P, WB	200 ul	Hu	ELISA, IHC-F, IHC-P, WB	More Data
P3129-80A	More Data P3129-80A Rabbit Anti-PDZ Domain Containing 1 antibody, Monoclonal[P3129-80A] 100 ul Hu, Mo IF, WB	100 ul	Hu, Mo	IF, WB	More Data
39865	More Data 39865 Rabbit Anti-PDZ Domain Containing 1 antibody, Monoclonal[39865] 200 ul Hu ELISA, IHC-F, IHC-P, WB	200 ul	Hu	ELISA, IHC-F, IHC-P, WB	More Data
039865-HRP	More Data 039865-HRP Rabbit Anti-PDZ Domain Containing 1 antibody, Monoclonal[039865-HRP] 200 ul Hu ELISA, IHC-F, IHC-P, WB	200 ul	Hu	ELISA, IHC-F, IHC-P, WB	More Data
Show more from United States Biological
039865-Biotin	More Data 039865-Biotin Rabbit Anti-PDZ Domain Containing 1 antibody, Monoclonal[039865-Biotin] 200 ul Hu ELISA, IHC-F, IHC-P, WB	200 ul	Hu	ELISA, IHC-F, IHC-P, WB	More Data
039865-AP	More Data 039865-AP Rabbit Anti-PDZ Domain Containing 1 antibody, Monoclonal[039865-AP] 200 ul Hu ELISA, IHC-F, IHC-P, WB	200 ul	Hu	ELISA, IHC-F, IHC-P, WB	More Data
039865-PE	More Data 039865-PE Rabbit Anti-PDZ Domain Containing 1 antibody, Monoclonal[039865-PE] 200 ul Hu ELISA, IHC-F, IHC-P, WB	200 ul	Hu	ELISA, IHC-F, IHC-P, WB	More Data
131132	More Data 131132 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[1E9] 100 ug Hu ELISA, IHC-F, IHC-P, WB	100 ug	Hu	ELISA, IHC-F, IHC-P, WB	More Data
P3129-80B	More Data P3129-80B Goat Anti-PDZ Domain Containing 1 antibody, Monoclonal[P3129-80B] 100 ug Mo, Rt WB	100 ug	Mo, Rt	WB	More Data
P3129-80E	More Data P3129-80E Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[1C3-2B11] 50 ug Hu ELISA, IHC-F, IHC-P, WB	50 ug	Hu	ELISA, IHC-F, IHC-P, WB	More Data
039865-FITC	More Data 039865-FITC Rabbit Anti-PDZ Domain Containing 1 antibody, Monoclonal[039865-FITC] 200 ul Hu ELISA, IHC-F, IHC-P, WB	200 ul	Hu	ELISA, IHC-F, IHC-P, WB	More Data
212548-Biotin	More Data 212548-Biotin Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal, Biotin 100 ul Hu, Mo, Rt AP, IHC-F, IHC-P, WB	100 ul	Hu, Mo, Rt	AP, IHC-F, IHC-P, WB	More Data
249964-HRP	More Data 249964-HRP Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[1C3-2B11], HRP 100 ul AP, ELISA, IHC-F, IHC-P, WB	100 ul		AP, ELISA, IHC-F, IHC-P, WB	More Data
039865	More Data 039865 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 200 ul Hu AP, ELISA, IHC-F, IHC-P, WB	200 ul	Hu	AP, ELISA, IHC-F, IHC-P, WB	More Data
212548-FITC	More Data 212548-FITC Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal, FITC 100 ul Hu, Mo, Rt AP, IHC-F, IHC-P, WB	100 ul	Hu, Mo, Rt	AP, IHC-F, IHC-P, WB	More Data
249964-Biotin	More Data 249964-Biotin Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[1C3-2B11], Biotin 100 ul AP, ELISA, IHC-F, IHC-P, WB	100 ul		AP, ELISA, IHC-F, IHC-P, WB	More Data
249964-FITC	More Data 249964-FITC Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[1C3-2B11], FITC 100 ul AP, ELISA, IHC-F, IHC-P, WB	100 ul		AP, ELISA, IHC-F, IHC-P, WB	More Data
Boster Biological Technology
A03176	More Data A03176 Rabbit Anti-PDZ Domain Containing 1 antibody, Polyclonal 100 ul Hu, Mo, Rt WB WB	100 ul	Hu, Mo, Rt	WB	More Data
M03176	More Data M03176 Mouse Anti-PDZ Domain Containing 1 antibody, Monoclonal[OTI2B4] 100 ul Hu WB WB	100 ul	Hu	WB	More Data
M03176-1	More Data M03176-1 Rabbit Anti-PDZ Domain Containing 1 antibody, Monoclonal[23P73] 100 ul Hu IP, WB WB	100 ul	Hu	IP, WB	More Data

Related antibodies

PDZ Domain Containing 1 antibodies are often published with	Associated citations
Scavenger Receptor Class B Member 1	18.2%
Caspase Recruitment Domain Family Member 16	18.2%
Ezrin	9.1%
HRP	9.1%
F-Box And WD Repeat Domain Containing 4	9.1%
Sideroflexin 1	9.1%
CF Transmembrane Conductance Regulator	9.1%
Early Endosome Antigen 1	9.1%
Tight Junction Protein 1	9.1%

ELISA Kits

8 PDZ Domain Containing 1 ELISA Kits from 2 suppliers

Bac	Bacteria
Bt	Bat
Bv	Bovine
Cel	C.Elegans
Cml	Camel
Cn	Canine
chem	Chemical
Ch	Chicken
Dk	Donkey
Dr	Drosophila
Du	Duck
Eq	Equine
Eu	Eukaryotes
Fe	Feline
Fi	Fish
Fr	Frog
Fu	Fungus
Gt	Goat
Gf	Goldfish
GP	Guinea Pig
Ha	Hamster
Hu	Human
Inv	Invertebrates
Llm	Llama
Mam	Mammals
Mo	Mouse
Pl	Plant
Po	Porcine
Pr	Primate
Pro	Prokaryotes
Rb	Rabbit
Rt	Rat
Sh	Sheep
Sq	Squirrel
Vert	Vertebrates
Vi	Virus
Xe	Xenopus
Yt	Yeast
Zf	Zebrafish

AP	Affinity purification
Bl	Blocking
ChIP	Chromatin Immunoprecipitation
DB	Dot Blot
EMSA	Electron Microscopy
ELISA	Enzyme Linked Immunosorbent Assay
FACS	Flow Cytometry
FA	Functional Assay
GS	Gel Shift
ICC	Immunocytochemistry
ID	Immunodiffusion
IF	Immunofluorescence
IHC-F	Immunohistochemistry frozen
IHC-P	Immunohistochemistry paraffin
IP	Immunoprecipitation
IVT	In vivo targeting
Neu	Neutralising
Pep-ELISA	Peptide ELISA
PLA	Proximity Ligation Assay
RIA	Radioimmunoassay
WB	Western Blot

Protein Map Explorer

201 matching PDZ Domain Containing 1 antibodies from 23 suppliers

Top PDZ Domain Containing 1 Antibodies

FineTest

Santa Cruz Biotechnology

Origene

PDZ Domain Containing 1 information

Aliases

10 Applications, 11 Species currently selected

PDZ Domain Containing 1 antibodies

FineTest

Santa Cruz Biotechnology

Origene

Sino Biological

Merck

Atlas Antibodies

Epigentek

Abcam

United States Biological

Boster Biological Technology

Related antibodies

ELISA Kits

All None	52	24	18	3	7	5		1
	WB	IHC-P	IHC-F	ELISA	IF	ICC	FACS	IP	AP	Pep-ELISA
Human	136	89	70	65	61	38	13	11	4	2
Mouse	72	32	21	16	35	12	13	9	3	2
Rat	58	26	17	14	30	11	13	9	2	2
Bovine	6	4	3		4	3	1
Guinea Pig	5
Canine	4
Bacteria	3	1	1						1
Equine	2
Rabbit	1	1	1						1
Primate	1
Bat	1