The typical characters of spore were observed under light microscope. The width and length of spore were (8.90±0.55) μm and (8.35±0.46) μm respectively, the width and length of polar capsule were about (2.39±0.36) μm and (4.48±0.39) μm separately.
The results indicated that numerous fibroblasts turned round and hypertrophied in the connective tissue beneath the epidermis of fish body surface,the cytoplasm became incompact and vacuolated. The hypertrophied cells with the size of 10～18 μm showed no capsule outside the cell membrane,and only a few basophilic substances were found in the cytoplasm of some cells;
Through histopathological and cytopathological studies on the ill farmed sturgeon, Acipenser dabr-ganus, By anatomy, epicardium cyst was found and there were all kinds of protrusions outside the heart.
Most embryo sacs degenerated, and only about 4.5% of the ovules contained a normal embryo sac with an egg cell, two synergids, three antipodal, and a central cell containing two polar nuclei.
Reserve nutrients were accumulated by the musculocutaneous sac elements at the procercoid stage and, later, by the glandular and tegumental cells.
New data have been considered concerning the previously unknown intraembryonic hemopoietic organ in mammals, a region of aorta-gonad-mesonephros arising in embryogenesis simultaneously with the yolk sac.
Cytophotometric measurements of Feulgen-DNA were carried out in the nuclei of embryo sac cells of Haemanthus albiflos and Ornithogalum caudatum.
Formation of nonreduced gametes in the embryo sac was induced by low temperature (4-7°C).
Thyroglossal duct carcinoma, which is usually diagnosed postoperatively, is a rare malignant tumor arising in the thyroglossal duct cyst.
Two cases were diagnosed as thyroglossal duct cyst prior to the operation, the remaining one as dermoid cyst.
Primary thyroglossal duct carcinoma should conform to the following criteria: localization of the carcinoma to a clearly demonstrable thyroglossal duct cyst or tract; clinically or histologically confirmed absence of carcinoma of the thyroid gland.
The obligatory heterogenous tissue cyst-forming coccidia of the genus Sarcystosis are regarded as an excellent example of the specific coexistence of two organisms, i.e., the host and parasite.
Of special interest is the parasite's ability to persist in this host at the stage of tissue cyst or sarcocyst.