Table 1.

Antibodies used in Western blot and immunofluorescence staining.

Antibody	Catalog No.	Company	Dilution
phospho-Smad2	3108	Cell Signaling	1:1000
phospho-Smad3	9520	Cell Signaling	1:1000
Smad4	9515	Cell Signaling	1:1000
PCNA	ab92522	Abcam	1:1000
HRP antirabbit IgG	sc-2004	Santa Cruz	1:10000
Smad3	9523	Cell Signaling	1:50
Alexa 488 antirabbit IgG	A21206	Invitrogen	1:1000
Acetylated αTubulin (6-11b-1)	sc-23950	Santa Cruz	1:100
Alexa 488 antimouse IgG	A10667	Invitrogen	1:1000