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A Biological Mystery
BacteriaEaters at Work
ParasitismA Way of Life
21 other sections not shown
adult animals Ascaris attack bacteria bacteriophage bacterium barnacle become beetle begins Biologists bite blood body bumblebee called carrier carry cause cells chemical crab cycle cyst D'Herelle dead develop digestive drawing nourishment Dutch elm disease dysentery ectoparasite eggs hatch Empusa ergot fected feed female filament final host fish fish louse flea flies flower flukes fungus germs grow hang harm head hookworm host's human host infected inside intestine itch kill its host kind lamprey larvae leaves lice living malaria mature microscope mistletoe mites mold mosquito muscles nematodes organs parasite phage plant pork produce protozoa pupa reach released reproductive rickettsias ringworm roots Sacculina saprolegnia sick skin snail fever snails soon species spores spread strange strangler fig suck suckers swimmer's itch ticks tissues tree trichina worms trypanosomes tube turtle typhus USDA vector victim virus viruses wasp wastes wheat rust yellow fever young