FIG. 4.

Lesion size as a percentage of the contralateral hemisphere 7 days after scaled cortical impact of the rostral gyrus in 5- to 7-day-old, 1-month-old, and 4-month-old pigs. The letters a, b, c are used to label the groups and indicate when the difference among groups is statistically significant (p < 0.05). Groups are different when they do not share a common letter (e.g., a is different from b, but there no significant difference between a and a,b, or b and a,b). (A) Lesion size in 5- to 7-day-old (n = 26), 1-month-old (n = 19), and 4-month-old (n = 22) pigs. Lesion size increased correspondent with age. (B) The same subjects shown in A, but separated by gender. Lesion size in 5- to 7-day-old females (n = 13) and males (n = 13), 1-month-old females (n = 10) and males (n = 9), and 4-month-old females (n = 12) and males (n = 10). Lesion size was greater in 5- to 7-day-old than in 1-month-old males, but not females of the corresponding ages.