People saw living specks on teeth in the 1670s. The word and the medical theory arrived much later.
Hospitals learned that some culture-negative infections were films poorly sampled by a swab of floating cells.
Timeline
van Leeuwenhoek describes motile specks from dental plaque.
Claude Zobell studies bacteria attaching to submerged surfaces.
The modern biofilm concept is framed for medicine and industry together.
Work on Pseudomonas in cystic fibrosis popularizes persistent-film thinking.
Chemical conversation in films becomes a major research theme.
US agencies highlight biofilms in chronic infection research agendas.
Insertion checklists cut catheter bloodstream infections.
Better imaging and sequencing show mixed-species architecture in plaque and wounds.
History is about noticing architecture, not about how to grow it.
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