Acetylcholinesterase (AChE) activity has been studied in the myoblast of skeletal muscle of the 9-13 day fetal rabbit. Cytochemical activity is present in the nuclear envelope and the endoplasmic reticulum, including its derivatives the subsurface reticulum and the sarcoplasmic reticulum. End product is also found in the Golgi complex of the more differentiated myoblasts. The formation of retic...

Determinations of the desoxyribonucleic acid (DNA) content of the kidneys of growing rats were made on the whole tissues and on isolated nuclei. It was found that the DNA content per nucleus is constant in rats of different weights. The DNA content of the kidneys increased proportionately to their mass over the range studied. It is concluded that increase in mass is primarily due to cell multip...

The aim of this study was to examine the possible relationship between sperm DNA integrity and chromatin packaging evaluated by cytochemical assays, traditional sperm parameters and recurrent spontaneous abortion (RSA) of unknown origin. In this cohort study, 40 couples with a history of RSA and 40 couples with proven fertility were considered as case and control groups respectively. The semen ...

Studies of innate immunity in fish species of special concern are essential for better understanding of their health status during hatchery rearing conditions. The cytochemical and morphological characterizations of blood granulocytes have been used to provide information about phylogenetic differences and determine the potential use of neutrophil function assays. Rapid, simple, cytochemical st...

While some workers have studied cytochemical localizations during oogenesis in molluscs (e.g. Arvy, 1949, 1950; Bretschneider & Raven, 1951; Collier, 1960; Cowden, 1961; Pasteels & de Harven, 1963), others have examined the ultrastructure of the developing oocyte using the electron microscope (e.g. Rebhun, 1956a, b, 1961; Worley & Hershenov, 1960; Pasteels & de Harven, 1963). This work has been...

Different types of haematocytes found in the peripheral blood of walking catfish Clarias batrachus, have been characterized and identified using morphological, morphometric and cytochemical techniques. These cells are: erythrocytes, reticulocytes, large and small lymphocytes, thrombocytes, monocytes and polymorphonuclear leucocytes (neutrophils).

cell free dna (cfdna) is a genetic biomarker that is present in serum or plasma in high concentration in many types of cancer. identification of circu-lating cancer related dna molecules in serum or plasma is a non-invasive tool for early diagnosis and prognosis in many cancer patients. for this review, study selection and data extraction were performed by the authors. detection of point mutati...