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Spheroplast

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Definition

noun, plural: spheroplasts

A gram-negative bacterial cell with the cell wall only partially removed resulting in a spherical shape.


Supplement

Partial removal of cell wall may be possible with penicillin.


Word origin: Latin sphaero-, from Greek sphairo-, from sphaira, sphere + plastos, formed, molded.

Compare: protoplast.
See also: cytoplasm, cell membrane.