patienit got the largest subconjunctival haematoma I have ever seen: at the end of the operation it stood up round the lower and inner part of the cornea, looking very much like a kidney with the hilum at the limbus. Before bandaging the eye I tapped this haematoma, with a cut from a pair of scissors. Recovery was tunieventful and the case left hospital at the end of the month. Tested in out-pa...

Meiosis consists of a single round of DNA replication followed by two consecutive nuclear divisions. During the first division (MI), sister kinetochores must orient toward the same pole to favor reductional segregation. Correct chromosome segregation during the second division (MII) requires the retention of centromeric cohesion until anaphase II. The spindle checkpoint protein Bub1 is essentia...

Megakaryocytes undergo a unique differentiation program, becoming polyploid through repeated cycles of DNA synthesis without concomitant cell division. However, the mechanism underlying this polyploidization remains totally unknown. It has been postulated that polyploidization is due to a skipping of mitosis after each round of DNA replication. We carried out immunohistochemical studies on mous...

Meiosis within fruiting bodies of Coprinus lagopus Fr. is closely synchronized. This conveniently facilitates joint lightand electron-microscope observations. Before nuclear fusion the chromatin appears diffuse in the light microscope; after nuclear fusion individual chromosomes can be recognized. In the electron micrographs the chromatin of pre-fusion and early fusion nuclei cannot be recogniz...

Dimensional accuracy in machined parts depends on the precision of spindle, which is highly affected by applied forces, itself. This precision of spindle becomes more serious when it is used for a period of long times. Therefore, stress and strain analysis of spindle is very important in the behavior and preservation of its precision. In this paper, the forces applied to the spindle of a turnin...

abstract gastrointestinal mesenchymal tumors are a group of tumors originating from the mesenchymal stem cells of the gi tract. digestive tract schwannomas are rare mesenchymal tumors which occur most frequently in the stomach. we report a 56-yearold woman who was examined endoscopically for dyspepsia which she had suffered from since 3 years ago. around gastric antral mass was seen. surgical r...

background: the aim of this study was to assess effects of cysteamine as an anti-oxidant on rate of in vitro maturation of oocyte and determination of its effects on spindle size and shape. methods: pre-mature mice were primed with pregnant mare stimulating gonadotrophin (pmsg) and germinal vesicle (gv) stage oocytes were obtained 48 h after. the oocytes were cultured in tissue culture medium (...

be greatly enhanced by a 50% reduction in maternal Asymmetric spindle positioning is of fundamental imgoa-1 gene dosage [3]. This indicates that goa-1 and portance for generating cell diversity during developric-8 are likely to function in the same processes, but ment. In the C. elegans 1 cell embryo, spindle positionthe phenotype of ric-8 mutants has not been directly ing has been shown to dep...

among the various methods of clinical teaching, rounds and grand rounds are considered as the gold standards. clinical round includes some standard components and it plays an effective role in student's learning process. the aim of this study was to evaluate the content of teaching rounds in 40 clinical wards in 4 medical teaching hospitals affiliated to tehran university of medical sciences in...