Effect of silencing of v-cath on the specific growth rate (A), the viability (B), and GFP production (C) in baculovirus infected Sf-9 cells. Cell counts were measured using a hemocytometer and viable cells were detected using trypan blue. Cell viability was defined by the ratio of the viable cell number to the total cell number. (◆) cells treated without dsRNA; (■) cells treated with dsRNA. GPF was measured quantitatively (C) using a fluorescence spectrometer. (black bar) cells without dsRNA; (white bar) cells treated with dsRNA.