ANXA5 and viral infectious disease: And for apoptosis associated with GCaMP, neurons of 10 days after virus infection of AAV-Syn-GCaMP6m-XC exhibited much weaker apoptotic signals of fluorescent Annexin V (<20% neurons), almost back to the level of control neurons (Fig. 5e), in contrast to the pronounced damages by GCaMP6f (>60%, Fig. 1c).