Table 2.

Effect of human insulin via bloodmeal on lifespan

	Buffer		Insulin		Wilcoxon statistic
Experiment	N	Days	N	Days
	1	102	23	93	21	NS
	2	79	29	66	25	NS
3	455	19	508	13	<0.0001
4	304	21	327	18	0.001
5	456	28	460	25	0.001

Median lifespans (days) and statistical results from five independent experiments comparing A. stephensi provided with 1.7×10⁻³ μmol l⁻¹ human insulin (or buffer as a control) via artificial bloodmeal. In experiment 5, two additional treatment groups were included (0.05 mmol l⁻¹ MnTBAP and MnTBAP + insulin); the results from these groups and associated statistics are discussed in the text.