[Morphological characteristics of central and peripheral organs of rat immune system in time course of adaptation to external low-dose gamma irradiation].

The morphohistochemical changes in immune system lymphoid organs and skin of rats, exposed to single and fractionated gamma-radiation (0.35 Gy) were studied during 1 month. It has been revealed that single irradiation didn't significantly influence, while the fractionated irradiation in equal dose resulted in lymphoid cells elimination from thymus and spleen and changes in skin and bone marrow cells subsets, inducing the increase of lymphoid cells number and activation of tissue basophils and macrophages reaction.

[A complication of local anesthesia during tooth extraction in children].

The authors describe a rare complication of local injection anesthesia, carried out in children for tooth removal: development of a specific granuloma due to Mucor and Nocardia mold fungi. The authors claim that the mycotic granuloma developed because of violation of the rules of asepsis, one of the possible violations being multiple use of disposable single-use syringes. No doubt, such complications can be easily prevented if asepsis regulations are strictly adhered to.

[Morphofunctional status of the lysosomal-segregation apparatus of rat hepatocytes at different stages of ontogeny].

The influence of adrenaline and insuline on the morpho-functional state of the lysosome-segregation apparatus of rat hepatocytes was studied in ante- and postnatal periods of life. Using the vital staining of hepatocyte squash preparations, differences in the reaction of the lysosome-segregation apparatus towards a stabilizator (adrenaline) or a labilizator (insulin) was revealed at different stages of ontogenesis.