Effect of some chemicals inducers on terpenes production (ginkgolide A and bilobalide) in callus of Ginkgo bilobaL. plant Journal title: IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS) Authors: Abd El-monemM. Sharaf1, MohamedH. Hendawey2 ,, Mohamed I. Diab, HamdyM. Ibrahim2 Subject(s):