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MICR 221 (57)
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Lecture

MICR 221 - Spores and other internal structures.docx

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Department
Microbiology and Immunology
Course
MICR 221
Professor
N/ A
Semester
Fall

Description
Spores and other internal structures Sporesrestricted almost exclusively to some Gram positivesExtremely rare in gram negatives very resistant to heat irradiation chemical disinfectants and desiccation drying many spore formers are pathogensviable for hundreds of years or much longerThe shape of the spore the location and distention bulging is diagnostiv o Ie can be terminal oval distendingaid in survival when nutrients or moisture scarcecomplex structure many layers15 of the cell dry weight is dipicolinic acid complexed with calciumstabilizes the spore nucleic acidsRevival and Identification of Bacterial Spores in 2540 Million Year Old Dominican Amber o Extract stomach contents of bee trapped for 25 million years in amber o Bacter
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