A secondary cell culture is established by transferring cells from a primary culture into a new vessel with fresh growth medium. This procedure is performed to avoid contact inhibition, periodically reducing cell density and supplying new nutrients to sustain cell division and growth.

Secondary Cell Culture

Contact inhibition is a cellular mechanism in which physical contact between cells triggers the arrest of mitosis, preventing the cell density in a culture from exceeding a certain threshold.

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A primary cell culture is a cell culture prepared directly from animal organs or tissues using mechanical scraping, mincing, or enzymatic digestion to isolate cells. Due to anchorage dependency, these cells must attach to a solid surface (such as glass or plastic) in a liquid medium to grow, and they generally exhibit a limited lifespan.

Primary Cell Culture

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Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

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