scholarly journals Studies on Deoxyribonucleic Acid Content and Cell Count of Human Heart Muscle

1970 ◽  
Vol 11 (1) ◽  
pp. 36-44 ◽  
Author(s):  
Toshiaki MORISHITA ◽  
Rikuro SASAKI ◽  
Shoichi YAMAGATA
1971 ◽  
Vol 12 (4) ◽  
pp. 325-334
Author(s):  
Toshiaki MORISHITA ◽  
Rikuro SASAKI ◽  
Shizuka ICHIKAWA ◽  
Hirotsugu YAMAGIWA ◽  
Shoichi YAMAGATA

1968 ◽  
Vol 95 (2) ◽  
pp. 185-192 ◽  
Author(s):  
Rikuro Sasaki ◽  
Yasuo Watanabe ◽  
Toshiaki Morishita ◽  
Shoichi Yamagata

1972 ◽  
Vol 127 (2) ◽  
pp. 40P-40P ◽  
Author(s):  
M J Blackburn ◽  
T M Andrews ◽  
R W E Watts

1962 ◽  
Vol s3-103 (61) ◽  
pp. 25-35
Author(s):  
H. WALLACE

A larval lethal mutant of Xenopus laevis lacks true nucleoli but possesses analogous intranuclear organelles, here termed blobs, which are smaller and more numerous than nucleoli. Cytochemical tests reveal that blobs (like nucleoli) contain ribonucleic acid (RNA), arginine, and alkaline phosphatase, but probably no Feulgen-positive material. Anucleolate larvae are deficient in cytoplasmic RNA. By biochemical methods the nucleic acid content of anucleolate embryos is found to be normal at the tail-bud stage, but does not increase after this. By the time they hatch, anucleolate larvae are deficient in both RNA and deoxyribonucleic acid (DNA). The implications of this and related mutations on the formation and function of the nucleolus are considered. The term ‘blob’ is justified in that it would be misleading to regard such organelles as nucleoli produced by normally latent organizers.


Nature ◽  
1955 ◽  
Vol 176 (4472) ◽  
pp. 116-117 ◽  
Author(s):  
JEROME J. FREED ◽  
ELIZABETH UFFORD GREEN

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