TABLE 3.

Uptake of lucifer yellow in infected cells^a

Virus	Tracer	Pulse time (min)	% Positiveb
Mock	LY	15	16.7
HSV-1(F)	LY	15	12.9
R3616	LY	15	33.8
Mock	LY	30	NDc
HSV-1(F)	LY	30	19.2
R3616	LY	30	33.5
Mock	None	30	1.5d

^aCells exposed to LY were fixed and analyzed for fluorescence as described in Materials and Methods.

^bThe percentage of cells positive for LY fluorescence was determined by subtracting the percentage of positive cells pulsed at 4°C from the percentage of positive cells pulsed at 37°C.

^cND, not determined.

^dThe percentage of positive cells was only determined after 37°C pulse.