
IndraLab
Statements
sparser
"Activin A (hereafter Activin-A) is a multifunctional secreted protein of the transforming growth factor (TGF)-β family that can activate SMAD2 and SMAD3 transcription factors and SMAD-independent signal transduction pathways by assembling heterooligomeric complexes of activin receptor (ActR)-IB with ActR-IIA or -IIB xref ."
reach
"The EOB phenotype was observed in mice lacking the type I BMP receptor genes, Acvr1 and Bmpr1a, the R-Smad genes, Smad 1 and Smad5, and the Co-Smad gene, Smad 4, but not in mice lacking the type II TGFbeta receptor gene Tgfbr2 and the activin and TGFbeta activated R-Smad genes, Smad2 and Smad3."