Plural of gnotobiology: the branch of biology studying organisms whose genetic and microbial makeup is completely known.
From gnotobiotic (from Greek gnotos 'known' + bios 'life') + -logy (study) in plural form. A modern scientific term.
Gnotobiology is the science of raising animals in completely sterile, controlled environments so scientists know exactly what bacteria and genes they have—it's crucial for medical research but the animals live pretty lonely lives.
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