Table 2.

Internalization of FITC-labeled influenza virus by monocytes/macrophages and lymphocytes

Experiment	HLA-A determinants of donor	Percent positive cellsa
		Monocytes/macrophagesb	Lymphocytes
1	1,2	10.89	4.55
	1,-	13.36	2.56
2	3,11	30.89	7.09
	11,-	21.15	3.76

^aCells containing FITC-labeled influenza virus-derived green fluorescence after addition of ethidium bromide to quench FITC-derived green fluorescence external to the cells. 10⁴ cells were analyzed for each determination. This table shows results using cells from HLA-A1-homozygous donor number 7

^bMonocytes/macrophages were identified by forward and side light scatter as well as expression of CD14