| protoplast | <biology> A bacterial cell deprived of its cell wall, for example by growth in an isotonic medium in the presence of antibiotics that block synthesis of the wall peptidoglycan. Alternatively, a plant cell similarly deprived by enzymic treatment. (18 Nov 1997) |
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| protoplasta | <zoology> A division of fresh water rhizopods including those that have a soft body and delicate branched pseudopodia. The genus Gromia is one of the best-known. Source: Websters Dictionary (01 Mar 1998) |