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

Crossword clues for Developing embryo:

AMNIOTICSACS: Embryo development sites
UTERI: Where embryos develop
FETUS: What an embryo develops into
FETUS: Developing embryo
GESTATION: When an embryo develops
UTERI: Places where embryos develop
RADICLE: Part of a plant embryo that develops into a root