Observations made on 31 amniotic fluid cell strains serially cultured until senescent are recorded. The cell strains had an average life in culture of 13-9 passages (range 3-29). The source of the amniotic fluid from which the cultures were initiated did not influence the behaviour of the cell strains. The behaviour ofthe cell strains was unrelated to the growth characteristics of the primary c...

After demonstrating, with karyotyping, polymerase chain reaction (PCR) and fluorescence in-situ hybridization, the retention of certain human chromosomes and genes following the spontaneous fusion of human tumor and hamster cells in-vivo, it was postulated that cell fusion causes the horizontal transmission of malignancy and donor genes. Here, we analyzed gene expression profiles of 3 different...

This article investigates the exomorphic characteristics of the achenes which are achene size, color, and surface pattern, and pappus length, and colour. All these characteristics in seven taxa of Asteraceae namely, C. aggregata Fisch. & C.A. Mey. ex DC. subsp. aggregata, C. sivasica Wagenitz, C. polypodiifolia Boiss. var. polypodiifolia, C. polypodiifolia Boiss. var. szowitziana (Boiss.) Wagen...

Three subspecies of Mus musculus have been recognized in Iran so far. The house mouse (genus0T 0T2TMus2T, species0T 0T2TMus musculus2T) are recognized for their highly conserved morphology and chromosomal structure, but some chromosomal characters offer accurate taxonomic markers in this species that has been shown any unambiguous diagnostic morphological traits. Among the chromosomal character...

Review of Gokhman VE: Karyotypes of Parasitic Hymenoptera Book details Gokhman VE: Karyotypes of Parasitic Hymenoptera Springer; 2009:183. ISBN 978-1-4020-9807-9 Review This book is principally the summary of a large body of work, spanning nearly 25 years, by Vladimir Gokhman [1]. He has carved a niche in karyology of parasitoid wasps and this book has much to offer in the way of chromosome dat...

-A population of Pappogeomys castanops s imulans was live-trapped on a 3.5-ha study area in Lubbock, Texas, from September 1971 to September 1973. Seasonal and annual differences in population size were observed, with the population fluctuating between 20 and 25 gophers. Female reproductive activity began in January and continued until October, with an obvious period of recruitment lacking; how...

Yates, T . L., R. J . Baker, and R. K . Barnett (Depar tment o f Biological Sciences and T h e Museum, Texas Tech University, Lubbock, Texas 79409) 1979. Phylogenetic analysis o f karyological variation i n three genera of peromyscine rodents. Sys t . Zool. 28:4048.-Chromosoma1 homologies between Neotomodon alstoni, Baiomys taylori and species of Peromyscus for which G-band chromosomal data are...