Meaning & use
Mesosome
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An infolding of the cell membrane found in bacteria, once thought to play a role in cell division and respiration.
See it in a sentence
Early electron micrographs of bacteria revealed structures identified as mesosomes.
Researchers later argued that mesosomes might simply be artifacts of the sample preparation process.
A note on using this word
The existence and function of mesosomes remain debated; many microbiologists now consider them fixation artifacts rather than true organelles.
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