The f(s.lys) of KS14 in Galleria mellonella hemolymph varies substantially with the infection temperature and bacterial host strain, suggesting that temperature-dependent factors, such as the rate of phage particle inactivation by hemolymph components (54, 55), relative growth rates of the wild-type and lysogenized bacterial strain, and relative stability of KS14 in its particle and phagemid form, may all interact and contribute to the stable lysogenization frequencies observed under these conditions. This evidence concerns the gene EPCAM and infection.