The complexity of the mechanics involved in the mammalian reproductive process is evident. Neither an ovum nor an embryo is self-propelled, but move through the oviduct or uterus due to the peristaltic action of the tube walls, imposed pressure gradients, and perhaps ciliary motion. Here we use the method of regularized Stokeslets to model the transport of an ovum or an embryo within a peristal...

PURPOSE To learn about African American older adults' knowledge and perceptions of brain donation, factors that relate to participating or not participating in a brain donation research program, and methods to increase African American brain donation commitment rates in the context of an Alzheimer's disease (AD) research program. DESIGN AND METHODS African American older adults (n = 15) from ...

Growing mouse oocytes and fertilized ova were injected with chicken ovalbumin messenger RNA (mRNAov) and chicken conalbumin mRNA (mRNAcon) and cultured in vitro. Estimation of mRNAov and mRNAcon stability by hybridization of cDNAov and cDNAcon to extracted mRNA from injected oocytes and fertilized ova indicated a half-life of 147 and 366 h in the oocyte and 5 and 3 h in the fertilized ovum resp...

We have analysed the content of the growth and differentiation regulating peptide, transforming growth factor beta1 (TGFbeta1), in follicular fluid from patients undergoing in-vitro fertilization (IVF), and correlated concentrations of TGFbeta1 with the outcome of the IVF treatment and the concentrations of 17beta oestradiol in serum at ovum retrieval. A total of 88 women with infertility of >3...

To determine whether there is a relationship between oviposition time and the release of spermatozoa from the uterovaginal junction-sperm-host glands (UVJ-SHG), oviducal segments from turkey hens were isolated and washed immediately or 8-12 and 18-22 h after oviposition on Days 1, 2, 3 and 10-13 after artificial insemination. Spermatozoa were found in nearly all segments at all times examined, ...

The female reproductive tract is commonly referred to as oviduct in birds. The oviduct is a highly convoluted muscular duct, concerned with the transport of the ovum away from the ovary, with fertilization of the ovum and by the deposition of albumen, membranes and shell on to the ovum to form the finished egg [1]. Reproductive diseases in poultry causes high morbidity (35%), mortality (15%) an...

A large Schistosoma mettheei ovum containing two miracidia was recovered from a squash preparation of the liver of an experimentally infected hamster. When observed, the miracidia were motile and facing in opposite directions.

The objective of the present article is to review moral assumptions underlying organ donation in the intensive care unit. Data sources used include personal experience, and a Medline search and a non-Medline search of relevant English-language literature. The study selection included articles concerning organ donation. All data were extracted and analysed by the author. In terms of data synthes...

OBJECTIVE Preeclampsia (PE) occurs in 4.6% of pregnancies worldwide. The social phenomenon of increasing maternal age has raised the demand for donor oocytes. Egg donation has allowed women with poor ovarian reserve, premature ovarian failure, genetic disorders or surgical menopause to get pregnant. Recipients provide a unique model of immune response because of the differences in the genetic m...

BACKGROUND In New Zealand, embryo donation to others was approved in late 2005 and follows strict guidelines. To date, few donations have proceeded. Given the novelty of embryo donation and New Zealand's guidelines around donation, this study explores how potential recipients in New Zealand made meaning of embryo donation. METHODS Thirteen potential recipients were interviewed regarding decis...