Black cards
The special cards (black back) feature 24 important microbes, some of which are beneficial (probiotics) and some of which are dangerous to health (pathogens). These optional black cards allow for more teasing and strategic play.
The special cards (black back) feature 24 important microbes, some of which are beneficial (probiotics) and some of which are dangerous to health (pathogens). These optional black cards allow for more teasing and strategic play.