Table 3. Villus and crypt measurements in jejunal tissue of control animals and Giardia duodenalis infected calves.

	Villus length (µm)		Crypt depth (µm)		Villus/crypt ratio
	Mean ± sd	Range	Mean ± sd	Range	Mean ± sd	Range
Control	378±27	313–447	237±27	203–337	1.45±0.11	1.26–1.68
Infected	506±47	385–584	253±23	201–308	2.17±0.15*	1.91–2.59

^*P≤0.05 versus control group.