My cells are beautifully stained in green JC1 but there's no red at all. How is that possible? They used to have both. We did change the growth medium protocol and actually cells seems to grow better now, except no red. Tried multiple batches of JC1 now. Is it possible for a cell to be alive but only express inactive mitochondria (green JC1)??? Thanks for your thoughts. Ps...this is doing live cell imaging on an inverted confocal, exciting at 488 for both channels.