CVB3/28 decay over time in DMEM with varied amounts of FBS. (A) FBS = 0, kapp = 0.041 h−1, SE = 0.003 h−1 (the data in panel A are the same as shown in Fig. 1A); (B) FBS = 0.1%, kapp = 0.047 h−1, SE = 0.003 h−1; (C) FBS = 0.5%, kapp = 0.051 h−1, SE = 0.004 h−1; (D) FBS = 1%, kapp = 0.076 h−1, SE = 0.005 h−1; (E) FBS = 5%, kapp = 0.113 h−1, SE = 0.003 h−1; (F) FBS = 8.9%, kapp = 0.113 h−1, SE = 0.008 h−1; (G) FBS = 10%, kapp = 0.110 h−1, SE = 0.006 h−1; (H) FBS = 20%, kapp = 0.118 h−1, SE = 0.004 h−1.