Table 2.

Seasonal differences in expressions of tolerance genes (Means ± SE) of Barki sheep in Alexandria and Matrouh areas

Item	City	Winter	Summer	P-value
IL-2	Alexandria	18.99b ± 0.39	27.98a ± 0.06	0.0001
	Matrouh	29.90 NS ± 0.20	29.39 NS ± 0.18	0.09
IL-6	Alexandria	19.08b ± 0.23	28.15a ± 0.07	0.0001
	Matrouh	28.33 NS ± 0.11	28.29 NS ± 0.04	0.74
IL-12	Alexandria	9.73NS ± 0.82	10.62NS ± 2.33	0.72
	Matrouh	13.46 NS ± 3.32	14.58 NS ± 3.24	0.81
HSP 70	Alexandria	15.24a ± 3.25	7.29b ± 0.09	0.03
	Matrouh	14.97 NS ± 3.22	15.84 NS ± 2.97	0.85

HSP 70: Heat shock protein, IL-2, IL-6, IL-12: Interleukins 2, 6 and 12

^a,b Values within a row with different superscripts differ at P < 0.05, NS, not significant