[Molecular differentiation and taxonomy of the sunwatcher toadheaded agama species complex Phrynocephalus superspecies helioscopus (Pallas, 1771) (reptilia: agamidae)].

Lizards of the sunwatcher toad-headed agama species complex Phrynocephalus superspecies helioscopus, mostly distributed in Middle Asia and Middle East, were examined using analysis of variation at the mitochondrial cytochrome oxidase c subunit I gene fragment and fingerprint analysis of nuclear DNA (inter-SINE PCR technique). A total of 86 individual tissue samples from 53 populations, to the full extent representing different parts of the species complex range, were subjected to molecular genetic examination, and surprisingly deep differentiation was revealed. The populations analyzed split into 12 isolated phylogroups, many of which were characterized by a narrow range and genetic isolation.

[Genetic diversity of Swan goose (Anser cygnoides l.) in Russia: analysis of the mitochondrial DNA control region polymorphism].

Using to analysis of hypervariable fragment polymorphism in the control region of mitochondrial DNA (268 bp), the genetic variability of Swan goose Anser cygnoides L., included in the first category of endangered species in the Russian Red Book, has been investigated. Samples from the two main groups nesting in Russia-the Far Eastern group (Khabarovsk krai, n = 38) and the Dauric group (Chita region, n = 10) were examined.

[Lung and pleural involvement in lymphosarcoma].

The pulmonary-pleural syndrome is often encountered in practice as a manifestation of lymphosarcoma that may be suspected on the basis of "atypical" pneumonia characterized by relapses and tendencies towards bilateral polysegmental lesions with the involvement into the process of the intrathoracic lymph nodes of complicated by hemorrhagic pleurisy, with the presence of pronounced alterations on the part of the blood in the form of anemia and lymphocytosis. Biopsy of an enlarged peripheral lymph node is the only reliable method of verification of lymphosarcoma diagnosis.