0 votes 0 votes During a positive-negative selection process, transformed animal cells expressing __________________ are killed in presence of ganciclovir in the medium. Pyruvate kinase viral thymidine kinase viral serine/threonine kinase viral tyrosine kinase Others gate2020 + – soujanyareddy13 asked Nov 3, 2020 • edited Dec 13, 2020 by soujanyareddy13 soujanyareddy13 2.7k points answer comment Share Follow See all 0 reply Please log in or register to add a comment.