Table 1.

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

Experiment	HLA-A determinants of donora	Percent positive cellsb
		Monocytes/macrophagesc	Lymphocytes
1	2,28	59.75	3.01
	2,-	61.47	4.94
2	1,11	20.58	3.78
	2,-	17.79	3.16
3	1,2	24.58	1.14
	2,-	21.54	1.26

^aCells from three different HLA-A2-homozygous donors (numbers 1, 4 and 5) were used

^bCells 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

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