Table 1.

Possible correlation among HPI, hemadsorption, cell viability and HA yield^a

HPI	%Binding	Viability	HA (mg/L)
0	0	92.9	0
6	0	92.9	0
23	20	87.6	4
30	30	88.2	7
46	65	74.7	18
50	80	52.4	20
54	70	50.1	20
70	40	21.8	11
75	30	16.1	11

^aHA yield was determined by SRID assay. The MOI of the virus stock was 1 for the experiment.