BACTERIUM-LIKE PARTICLES IN DELAYED IMPLANTING RAT BLASTOCYSTS

Progesterone and implanting blastocysts regulate Muc1 expression in rabbit uterine epithelium.

Mammalian uteri are unreceptive to blastocyst implantation except during a relatively brief period. The transmembrane, cell surface mucin, Muc1, is present on epithelial cells of nonreceptive uteri in various species and has been demonstrated to have antiadhesive properties. These activities of Muc1 may prevent interaction of the embryonic trophoblast cells with the uterine epithelium. A previo...

Avian lymphoid leukosis: Virus-like particles in kidney Cells

Detection of a Brucella-like (Alphaproteobacteria) Bacterium in Boophilus spp. (Acari: Ixodidae) from Iran

Ticks harbor many pathogenic, as well as endosymbiotic and non-pathogenic agents. They are host of a variety of as yet unidentified microbes that continue to be described. In the present study, a Brucella-like bacterium was detected in a Boophilus tick by PCR amplification of a partial fragment of 16S rRNA locus followed sequencing. Our results show that the members of the genus Boophilus may a...

Think like a bacterium

Introduction We must, albeit reluctantly, dismiss the naive but comforting myth of the bacterial cell as a simple loner: a self-contained bag of uncompartmentalized enzymes, so exquisitely uncomplicated as to be understood outright and considered passé in this new millennium—a biological beaker for examining the more complicated eukaryotic versions of life. The recent EURESCO Conference on Bact...

Germline Competent Embryonic Stem Cells Derived from Rat Blastocysts

Rats have important advantages over mice as an experimental system for physiological and pharmacological investigations. The lack of rat embryonic stem (ES) cells has restricted the availability of transgenic technologies to create genetic models in this species. Here, we show that rat ES cells can be efficiently derived, propagated, and genetically manipulated in the presence of small molecule...