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Coauthor of an undergraduate study introducing mammalian cell culture and viability measurements. The educational work connected direct observation of living cells with quantitative assessment of survival and interpretation of experimental variation.^[ref]

Biologist and coauthor of an undergraduate teaching study introducing mammalian cell culture and viability measurements. The work connected students’ observations of living cells with quantitative evaluation of cellular survival.^[ref]

A published teaching experiment used ATCC CCL-2 HeLa to make the distinction between a cell line and the condition of individual biological cells visible. Cultures were expanded in treated flasks and supplied as adherent dishes. A wash with phosphate-buffered saline preceded trypsin treatment to detach them; added fetal bovine serum stopped the digestion. The dispersed preparation was mixed with an equal volume of trypan blue and loaded into a counting chamber under an optical microscope.^[ref]

For the ethanol comparison, treatment groups and an untreated control were brought to the same final volume; the control received phosphate-buffered saline. Dye-excluding counts were compared across replicates. The paper reports representative student measurements in Figure 3A and documents the untreated control in its discussion. Its alternative temperature comparison used three replicates per condition and a $30\min$ exposure.^[ref]

The paper's disposable chamber had a different count-to-number density calibration from the hemocytometer above. Dye exclusion does not establish future division; recovery and mixing also affect counts. The constructed hemocytometer example is independent of those observations.^[ref]

Biologist and coauthor of an undergraduate teaching study on mammalian cell culture and viability. The study connected hands-on cellular observations with measurement and interpretation of a biological response.^[ref]

Coauthor of an undergraduate study introducing mammalian cell culture and viability measurements. The educational work connected direct observation of living cells with quantitative assessment of survival and interpretation of experimental variation.^[ref]

Researcher and coauthor of an undergraduate teaching study introducing mammalian cell culture and viability techniques. The educational work connected cellular experiments with quantitative measurements of survival.^[ref]

Coauthor of an undergraduate study introducing mammalian cell culture and viability measurements. The educational work connected direct observation of living cells with quantitative assessment of survival and interpretation of experimental variation.^[ref]

Coauthor of an undergraduate study introducing mammalian cell culture and viability measurements. The educational work connected direct observation of living cells with quantitative assessment of survival and interpretation of experimental variation.^[ref]

Coauthor of an undergraduate study introducing mammalian cell culture and viability measurements. The educational work connected direct observation of living cells with quantitative assessment of survival and interpretation of experimental variation.^[ref]

Coauthor of an undergraduate study introducing mammalian cell culture and viability measurements. The educational work connected direct observation of living cells with quantitative assessment of survival and interpretation of experimental variation.^[ref]

Coauthor of an undergraduate study introducing mammalian cell culture and viability measurements. The educational work connected direct observation of living cells with quantitative assessment of survival and interpretation of experimental variation.^[ref]

Cell biologist and coauthor of an undergraduate teaching study introducing mammalian cell culture and viability measurements. The work connected direct observation of cultured cells with quantitative interpretation of cellular survival.^[ref]

Coauthor of an undergraduate study introducing mammalian cell culture and viability measurements. The educational work connected direct observation of living cells with quantitative assessment of survival and interpretation of experimental variation.^[ref]

Coauthor of an undergraduate study introducing mammalian cell culture and viability measurements. The educational work connected direct observation of living cells with quantitative assessment of survival and interpretation of experimental variation.^[ref]