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Fig. 5. ALP activity in the plasma and SBF of adult female and male chickens in
different physiological stages. (A) ALP activity in female chickens.
*P<0.05, post hoc tests. (B) ALP activity in
male chickens. Error bars denote s.e.m.; ST1, adults of the same age, with
females displaying regular laying cycles; ST2, adults of the same age, with
females that have gone out of lay. Numbers in the columns denote N.
In ST2, ALP activity in plasma and SBF was higher in females than in males
(Student's unpaired t-test, P<0.001 and
P<0.05, respectively).