منابع مشابه
Studies on Enzymatic Histochemistry
Extraction experiments demonstrated that choline esterase could be removed from microtome sections of tissue with as great facility by 0.9 per cent NaCl as by 30 per cent glycerol. The quantitative distribution of choline esterase through the wall of the pig stomach was studied, and it was found that the epithelial cell region possessed the greatest activity and muscle tissue the least. Pylorus...
متن کاملSTUDIES ON ENZYMATIC HISTOCHEMISTRY XXVI. Tm~ HISTOLOGICAL DISTRIBUTION O1~ CHOLINE ESTERASE IN THE GASTRIC MUCOSA NORMALLY
In previous papers of this series Linderstr¢fm-Lang, Holter, and coworkers have investigated the histological distribution of pepsin (1, 2), acid (2, 3), peptidase (2, 4), and esterase (2, 5) in the gastric mucosa of pigs, and the urease (6) in dog's stomach. The present investigation is a continuation of this work with regard to choline esterase. In view of the well known theory of chemical me...
متن کاملStudies in Histochemistry
The total dry mass of human erythrocytes was determined by both interference microscopy and x-ray microradiography. The determination of mass per unit area, and calculation of total dry mass per cell were simplified by changing the shape of the cells to spheres which were then flattened to discs of constant thickness when smeared on glass slides for measurement of fixed cells by interferometry,...
متن کاملThe use of histochemistry in pharmacological studies.
THERE are two general approaches to the cytological localization of sites of drug action: (1) demonstration of the distribution of the active drug, or a close analog, at the cellular level following its systemic admini,stration, and (2) the demonstration at discrete loci of changes in the concentration of a specific group or compound with which the drug is known to react to produce its characte...
متن کامل[Quantum chemical studies on enzymatic reaction mechanisms].
Computer modeling of enzymes is a valuable complement to experiments. Quantum chemical studies of enzymatic reactions can provide a detailed description of the reaction mechanism and elucidate the roles of various residues in the active site. Different reaction pathways can be analyzed, and their feasibility be established based on calculated energy barriers. In the present thesis, density func...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1938
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.21.3.289