Possible Clues:

• Single-cell organisims
• Bugs one in avant-garde cabaret
• Care a bit about these micro-organisims
• Microscopic organisms, can cause disease
• Care a bit about these micro-organisms?
• The organisms are in bait race, strangely
• What may turn up in hair etc. - abundant micro-organisms
• Single-cell organisms, can be good or bad for you
• Some germs
• Cabaret I found containing microscopic organisms