Experimental Growth in Animals 249 



Table 9.11. It is evident that the mitotic index is more depressed 

 by thiouracil than by thyroidectomy, but it seems surprising that 

 this fact is not at all noticeable without colchicine, thiouracil-injected 

 animals having a slightly higher mitotic count than the controls. The 

 authors think that the count alter thiouracil results from a double 

 cllect, i.e., a decrease of the mitotic rate, which would decrease the 

 mitotic index, and a simultaneous lengthening of the duration of 

 mitosis, which would have the opposite effect. 



4. 



TABLE 9.11 



Corneal Mitotic Counts in a Rabbit 



(After Fleischmann and Ereckler^^) 



Allen, E., and Greadick, R. N. Ovogenesis during sexual maturity. The first 

 stage of mitosis in the germinal epithelium, as shown bv the colchicine tech- 

 nique. Anat. Rec. 69:191-95. 1937. 



. Smith, M., and Gardner, W. U. Accentuation of the gro\vth effect of 



theelin on genital tissues by arrest of mitosis with colchicine. Anat. Rec. 67: 

 Suppl. 1:49. 1936. Accentuation of the growth effect of theelin on genital 

 tissues of the ovariectomized mouse by arrest of mitosis with colchicine. Amer. 

 Jour. Anat. 61:321-42. 1937. A short test for ovarian follicular hoiuione and 

 other estrogens. Endocrinolog)'. 21:412-13. 1937. 



, , and Reynolds, S. R. M. Hyperplasia of uterine muscle, as 



studied bv the colchicine method. Proc. Soc. Exp. Biol, and Med. 37:257-59. 

 1937. 



-, Thomas, T. B., Wilson. J. 



G., and Hession. D. Differential grouih in 

 the time of ovui;ition in rats treated with 



8. 



9. 

 10. 



the ovaries and genital tract near 



colchicine. Amer. Jour. Anat. 72:291-337. 1943. 



Astaldi, G., Bernardelli, E., and Rebaudo, G. Research on the proliferation 



activity of ervihroblasts at low atmospheric pressure. Experieniia. 8:117-19. 



1952. La proliferation de lervthroblaste en depression. Le Sang. 23:293-310. 



1952. 



and Macri. C. La valutazione dellaltivita proliferativa dclle cellule 



midollari. Studio di un "test statmocinetico." Haematologica. 33:1-46. 1949. 



, AND . New criteria for the evaluation of the bone-marrow cells 



mitotic activitv. Le Sang. 21:378-82. 1950. 



AND Di Guglielmo, L. 



L'effetto dei raghi roentgen sulfattivita 



proliferativa degli eritroblasti studiati ncl midollo osseo umano in cidlura. 



Haematologica. 35:867. 1950. 



Bair, F. Uber das \'orkommen \ou Mitoscn im vorder 



dcr Hypophyse. Acta Neerl. Morph. 3:97-128. 1939. 



Baker^ D. D., and Baillif, R. N. Role of capsule in surrenal regeneration 



studied witli aid of colchicine. Proc. Soc. Exp. Biol, and Med. 10:117-21. 1939. 



der- und /w ischcnlappen 



