Table 3.

Comparison of Plasmodium vivax ookinete yields by using two gametogenesis protocols^*

Sample no.	Xanthurenic acid			Human serum
	Round	Ookinete	Ookinete yield	Round	Ookinete	Ookinete yield
1	+	–	0	+	–	0
2	+	–	0	+	–	0
3	+	–	0	+	+	3.8 × 103
4	+	+	6.0 × 102	+	+	5.0 × 102

^*Four patient samples were equally divided and stimulated to undergo gametogenesis using two induction solutions, either exflagellation solution with xanthurenic acid or heat-inactivated human serum. The presence of round forms, which include macrogametes and zygotes (Round), and of ookinete forms is noted by +. Ookinete yields for each sample are described as no. ookinetes/5 mL of patient blood; only mature ookinete forms were quantified.