SUPRARENAL GLAND—EFFECTS OF INANITION 287- 
TABLE 5 
Mitoses in the suprarenal gland of the albino rat 
NORE AVERAGE NUMBER OF MITOSES PER SECTION IN 
AGE AND CONDITION BER OF 
GLANDS| Outer 
zone 
Inner | Me- | Total average 
zone dulla |; (and range) 
Middle 
zone 
A. In normal rats 
ISG SL OVET E.G ge le i ee a 3 11 2 1 6 | 20 (12-29) 
ODEON pena mee ep oat es ae ameemetr on 3 5 2 4 3 | 10 (7-18) 
LU Sa a Se Be 6 5 3 4- | 16 (14-18) 
LES ee An eed 1 18 17 0 5 | 40 
ives. (OEE S FS che. hehe ie a 2 10 10 3 6 | 27 (22-381) 
=D) ee a ae 9 9 12 z 2 | 24 (10-41) 
SPOS 72 dg ae 1 3 5 0 S | 11 
i 94 dances aie n Sh see. sort es. 4 2 2 a 0 4 (2-5) 
CAE ICr hs 2 1 1 0 0 2 (1-3) 
CUE ee, fe a tee Seat 3 oe as a el 1 1 0 0 0 1 
B. In test rats 
Maintenance birth to 12 days...... 1 1 1 0 mS) 14. 
Maintenance 3-10 weeks...........| 10! 3 4 0 0 1 (0-8) 
Maintenance 3-12 to 20 weeks..... 3 0 0 0 0 0 
Refed 1 week........... Bs 23 =, 2 SS: 3 3 1 0 3 2 (1-3) 
ELCONAtWEEKS este ot ccc en 2 3 5 0 2 LO“ (712) 
PEI suG MUVGHT Ree ceteris Ss 3 553 1 0 0 0 0 0 
1 Six of the ten held at maintenance from three to ten weeks of age showed no 
mitoses in the sections examined. 
THE AMERICAN JOURNAL OF ANATOMY, VOL. 25, No. 3 
