Table 1.

Sample population of snails.

	PF	OL	DK	ST	NV
N = (re:weight)	15 (6 + 9)	21 (10 + 11)	20	17 (4 + 13)	15
Snail weight, gm	8–10 (6)	3–7 (11)	18–28	8–10 (4)	20–25
	20–25 (9)	15–20 (10)		20–25 (13)
Temperature	+	+	+	+	+
Food deprivation and congestion	+	+	+	+
No light cycle	+	+	+
Overloading	+	+
μG exposure	+

Five experimental groups: PF, postflight Bion-M1; OL, overload snails subjected to brief hyper-gravity centrifugation before testing; DK, snails housed in flight habitat in dark like PF snails; ST, starvation snails subjected to the same food and water sources and congestion as PF snails; and NV, naïve snails housed in the standard lab terrarium. Sample number (N=) is given for the total number within each group, and where appropriate the snails are partitioned into either a small body weight or large body weight (parentheses). Pluses correspond to the conditions given in the leftmost column in which the snails in each group are subjected.