Figure 5.

Na⁺ and K⁺ uptake into γ-infected Sf-9 cells. Cells infected with γ (•) or IAP (○) baculoviruses were depleted of intracellular K⁺ (A) or Na⁺ (B) and uptake was measured by using ⁸⁶Rb or ²²Na as tracer, respectively. Bumetanide (100 μM) was included to inhibit bumetanide-sensitive transport. The rate of Na⁺ or K⁺ uptake in uninfected cells is approximately 80% of the rate in infected cells (not shown). Each value is the mean with error bars representing the standard error of eight determinations. Similar results were obtained from two different experiments.