Morphology of the epididymal duct of the domestic pig (Sus scrofa domesticus).

The study provides a general overview of the morphology of the epididymal duct in pigs. Four epididymides from two sexually mature boars were dissected into 32 segments and examined histologically. Duct lumen and wall thickness were measured and relative surface area of different components was assessed by Chalkley's random hit method.

Is the corpus uteri a suitable site for embryo transfer in the pig?

Numerous attempts to establish a practicable means of non-surgical embryo transfer in pigs were unsuccessful until instruments were developed to permit deposition of embryos deep inside a uterine horn. Recently, however, successful non-surgical transfer of embryos to the uterine body in non-sedated recipients has been reported. These reports have prompted us to present data from a study that addresses the question of whether the commonly experienced low pregnancy rates following transfers to the corpus uteri results from the inability of endometrial receptors to recognize the presence of embryos or to the prevailing unfavorable local conditions.

Machine Learning Prediction of Adenovirus D8 Conjunctivitis Complications from Viral Whole-Genome Sequence.

Objective: To obtain complete DNA sequences of adenoviral (AdV) D8 genome from patients with conjunctivitis and determine the relation of sequence variation to clinical outcomes.

Design: This study is a post hoc analysis of banked conjunctival swab samples from the BAYnovation Study, a previously conducted, randomized controlled clinical trial for AdV conjunctivitis.

Participants: Ninety-six patients with AdV D8-positive conjunctivitis who received placebo treatment in the BAYnovation Study were included in the study.

LH pattern and ovarian response in ovsynch-synchronized superovulated goats induced to ovulate with GnRH or hCG.

The intention of the present investigation was to compare a GnRH agonist and hCG as ovulation inducing agents to apply fixed-time insemination in ovsynch synchronized superovulated goats. Three groups of 17 does of the Boer goat breed were synchronized, superovulated and ovulation induced with a GnRH analog, hCG or physiological saline, followed by mating and non-surgical embryo collection. Part of the does were provided with subcutaneous progesterone implants after mating to compensate for frequently occurring premature corpus luteum regression.

Vitrification of Mouse Blastocysts by Open or Closed System and Warming in Sucrose-containing or Sucrose-free Diluent.

Background: Cryopreservation of embryos is of considerable relevance for the implementation of embryo transfer programs and the establishment of embryo banks in several mammalian species.

Objective: The present investigation compares two different vitrification systems and two different warming solutions.

Materials And Methods: Vitrification was performed using Open Pulled Straw (OPS) or CVM RingFibre plug (CVM) devices.