The drug imatinib acts by inhibtion of-
High-Yield Explanation
Ans. is 'a' i.e. Tyrosine kinase Imatinib inhibits tyrosine protein kinase in CML and the ones that are activated by platelet derived growth factor (PDGF) receptor, stem cell receptor and C-KIT receptor found in gastrointestinal stromal tumour (GIST).