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Virus exposure time dependence of in vitro infection. Virus exposure time ranging from 10 sec to 2.0 hr at varying concentrations of Adβgal in 8.8 × 104–1.0 × 105 cells (A) or AdLuc in 6.4–8.7 × 104 cells (B). Solid lines are logistical regression curves drawn through data. (n = 3.)
