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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Microscopic specimen:

AMEBA: Microscopic specimen
SLIDES: Microscope specimens
ONION: Science 101 microscope specimen
ONASLIDE: Where to place a microscope specimen
SLIDE: Microscope specimen
AMEBAS: Specimens on microscope slides