It was purified and cloned by Ferrara and Henzel in 1989 .
VEGF was first identified in guinea pigs , hamsters , and mice by Senger et al. in 1983 .
VEGF was purified and cloned by Ferrara and Henzel in 1989 .
VEGF was first identified in guinea pigs , hamsters , and mice by Senger et al. in 1983 .