Some Cytological Observations in Tricyrtis, Sagittaria and Lilium

Some New Cytological Observations in the Heterotrichous Ciliate, Blepharisma

During the course of an experimental, fine structural study of Blepharisma, certain aspects of the normal anatomy of the cell came to our attention. Although Blepharisma is the subject of two recent reports (9, 10), these features have, to our knowledge, hitherto been neglected in the literature. Furthermore, we feel that the present report may serve to clarify some of the recent work on the cl...

Some cytological and initial biochemical observations on photoreceptors in retinas of rds mice.

As a control for biochemical studies in progress, an ultrastructural study has been carried out on the deteriorating, 21-day photoreceptors of the 020/Cpb strain of mice, homozygous for retinal degeneration, slow (rds). At 21 postnatal days, outer segments were essentially lacking, but cilia erupting from the inner segments were common. A low percentage of cilia bore small cytoplasmic masses co...

Some Observations on Dirac Measure-Preserving Transformations and their Results

Dirac measure is an important measure in many related branches to mathematics. The current paper characterizes measure-preserving transformations between two Dirac measure spaces or a Dirac measure space and a probability measure space. Also, it studies isomorphic Dirac measure spaces, equivalence Dirac measure algebras, and conjugate of Dirac measure spaces. The equivalence classes of a Dirac ...

Some Observations on Clostridium perfringens Strains Isolated in IRAN

Progesterone-induced in vitro maturation in oocytes of Notophthalmus viridescens (Amphibia Urodela) and some observations on cytological aspects of maturation.

Maturation in vitro of oocytes of the newt, Notophthalmus viridescens, is inducible with progesterone after in vivo treatment of females with gonadotropin; few oocytes mature in vitro in the absence of such gonadotropin treatment. Chromosomes of most large oocytes of animals not receiving gonadotropin are still in the lampbrush condition; chromosomes from gonadotropin-treated animals are shorte...