Sharma K K, Niazi I A
Experientia. 1979 Dec 15;35(12):1571-2. doi: 10.1007/BF01953198.
Young froglets Rana breviceps do not possess the power to regenerate forelimbs after amputation through metacarpals. However, 5 min immersion of limb stumps in an oily solution of 150,000 IU vitamin A palmitate immediately after amputation, and once on each of the 3 subsequent days, induced definite though hypomorphic regeneration in 100% cases.