Spectrophotometric and Biological Assay of Vitamin A in Oils

1943 ◽  
Vol 15 (7) ◽  
pp. 441-443 ◽  
Author(s):  
N Coy ◽  
H Sassaman ◽  
Archie Black
Keyword(s):  
Vitamin A ◽  
Biological Assay

The Biological Assay of Vitamin A by Means of Its Influence on the Cellular Contents of the Vagina of Rats

1944 ◽  
Vol 28 (5) ◽  
pp. 365-379 ◽  
Author(s):  
Leonard I. Pugsley ◽  
Gordon Wills ◽  
W. Allister Crandall
Keyword(s):  
Vitamin A ◽  
Biological Assay

Spectrophotometric and Biological Assay of Vitamin A in Oils

1941 ◽  
Vol 13 (2) ◽  
pp. 74-76 ◽  
Author(s):  
N. H. Coy ◽  
H. L. Sassaman ◽  
Archie Black
Keyword(s):  
Vitamin A ◽  
Biological Assay

Biological Assay of Vitamin A

1948 ◽  
Vol 20 (4) ◽  
pp. 304-307 ◽  
Author(s):  
J. R. Foy ◽  
Kenneth. Morgareidge
Keyword(s):  
Vitamin A ◽  
Biological Assay

Vitamin Studies XVIII. The Biological Assay of Food Materials for Vitamin A as Influenced by Yeast from Various Sources

1931 ◽  
Vol 3 (5) ◽  
pp. 491-498 ◽  
Author(s):  
Hannah E. Honeywell ◽  
R. Adams Dutcher ◽  
Jacob O. Ely
Keyword(s):  
Vitamin A ◽  
Biological Assay

Vitamin a colorimetric and biological assay

1932 ◽  
Vol 21 (11) ◽  
pp. 1142-1145
Author(s):  
Edwin C. Wise ◽  
Frederick W. Heyl
Keyword(s):  
Vitamin A ◽  
Biological Assay

The Morphology of Vacuolated Cells in the Liver Following Administration of Vitamin A.

1973 ◽  
Vol 31 ◽  
pp. 408-409
Author(s):  
Odell T. Minick ◽  
Hidejiro Yokoo ◽  
Fawzia Batti
Keyword(s):  
Electron Microscopy ◽  
Body Weight ◽  
Vitamin A ◽  
Light And Electron Microscopy ◽  
Liver Cells ◽  
Prominent Feature ◽  
Vascular Space ◽  
Vacuolated Cell ◽  
Vacuolated Cells ◽  
Vacuolated Cytoplasm

Vacuolated cells in the liver of young rats were studied by light and electron microscopy following the administration of vitamin A (200 units per gram of body weight). Their characteristics were compared with similar cells found in untreated animals.In rats given vitamin A, cells with vacuolated cytoplasm were a prominent feature. These cells were found mostly in a perisinusoidal location, although some appeared to be in between liver cells (Fig. 1). Electron microscopy confirmed their location in Disse's space adjacent to the sinusoid and in recesses between liver cells. Some appeared to be bordering the lumen of the sinusoid, but careful observation usually revealed a tenuous endothelial process separating the vacuolated cell from the vascular space. In appropriate sections, fenestrations in the thin endothelial processes were noted (Fig. 2, arrow).

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