A slow freezing/rapid thawing method for the cryopreservation of human oocytes has been employed using a sodium-depleted culture media. In 53 frozen egg-embryo transfer (FEET) cycles, a 60.4% survival rate post-thaw was obtained and a 62.0% fertilization rate following intracytoplasmic sperm injection. Overall pregnancy rates were 26.4% per thaw attempt, 30.4% per patient, and 32.6% per embryo ...

The effect of oviposition site deprivation on oviposition performance and egg hatch rate of naturally blood–fed gravid Culex quinquefasciatus was examined in the laboratory. The rate of gravid females ovipositing within 24 hours was not significantly affected by the period of oviposition site deprivation that ranged from 1 day to 9 weeks. However, some gravid females failed to form egg rafts, a...

Knowledge of virus and replication kinetic is one of the most important issues in the vaccine production. The present study aimed to evaluate the best harvesting time of H9N2 avian influenza virus (AIV) vaccine strain inoculated in specific pathogen free (SPF) embryonated chicken eggs (ECE)s. For this purpose, 10-5 dilution of AIV (A/Chicken/Iran/99/H9N2) was inoculated into 336, 11-day old ECE...

Snapping turtles (Chelydra serpentina) demonstrate temperature-dependent sex determination (TSD): intermediate egg incubation temperatures (23-27 degrees C) produce males, while extreme temperatures produce females. Snapping turtles are also sexually dimorphic: adult males are typically larger than females. Previous researchers hypothesized that male-producing egg temperatures enhanced the grow...

We examined whether the previously reported low cost of embryonic development in pelicans could be attributed to a more efficient conversion of egg energy to hatchling tissues as a result of high initial egg water content, low embryonic metabolic rate and growth later in incubation than in more precocious species. We therefore determined egg and hatchling composition and the development of embr...

Aims Egg allergy is one of the most common food allergies in children. The prevalence in children is estimated to be approximately 2%. Reaction to raw/lightly cooked egg but tolerance to baked egg is often reported. The natural history of egg allergy is that it usually resolves with time but the rate of resolution is variable. The British Society for Allergy and Clinical Immunology published gu...