The first experiment of the passage shows that treatment with TGFBR1 and TGFBR2 antagonists led to lower levels of epithelial cell production. For this conclusion to be strongly valid, we want to show a positive correlation between TGFBR activity and epithelial proliferation.
Answer: Baboon, Leopard, Cheetah, Brown and Spotted Hyena, Klipspringer, Springbok, Steenbok, Cape and Bat Eared Fox, Hartmann's Zebra, as well as many insects, reptiles, small mammals and even wild Desert Horses
