Table 1.

Number of mast cells per mm² of lamina propria of the eruptive pathway in 9-, 11-, 13- and 16-day-old rats.

Rats	9-day-old	11-day-old*	13-day-old	16-day-old
1	35.6	124.0	34.5	33.7
2	17.2	78.0	22.0	23.5
3	26.4	92.3	52.0	59.1
4	29.4	52.8	35.4	31.4
5	37.7	60.7	36.4	33.5
Mean ± SD	29.2 ± 8.1	81.5 ± 28.3	36.0 ± 10.6	36.2 ± 13.4

^*Statistically significant (P ≤ 0.05).