Background: Improvement of assisted reproductive technique (ART) results in higher pregnancy rates from positive Beta HCG to take home baby statistics. Despite developments in culture media allowing blastocyst stage transfer, some centers apply second, third and sometimes fourth day post injection for embryo transfer. This study aimed to compare their reproductive outcomes.   Methods : This p...

background: intracytoplasmic sperm injection (icsi) is an advanced technique employed in assisted reproductive clinics for treatment of infertile couples. the reproductive endocrinologists try their level best to identify factors that enhance success rate after icsi. objective: to compare estradiol progesterone ratio on ovulation induction day amongst pregnancy outcome groups following icsi. ma...

background: improvement of assisted reproductive technique (art) results in higher pregnancy rates from positive beta hcg to take home baby statistics. despite developments in culture media allowing blastocyst stage transfer, some centers apply second, third and sometimes fourth day post injection for embryo transfer. this study aimed to compare their reproductive outcomes.   methods : this pro...

A method, bulked line analysis (BLA), was developed for identification of the RFLP markers associated with a target gene. Instead of segregating progenies, conventional lines sharing the same trait were bulked by the BLA method. This method is an alternative approach to the identification of DNA markers linked with a target gene. A major advantage of this method is time-saving for genetic stock...

In a recent publication [Ostromoukhov95], a new image reproduction technique, Artistic Screening, was presented. It incorporates freely created artistic screen elements for generating halftones. Fixed predefined dot contours associated with given intensity levels determine the screen dot shape's growing behaviour. Screen dot contours associated with each intensity level are obtained by interpol...

Hybridization between species is commonplace in plants, but is often seen as unnatural and unusual in animals. Here, I survey studies of natural interspecific hybridization in plants and a variety of animals. At least 25% of plant species and 10% of animal species, mostly the youngest species, are involved in hybridization and potential introgression with other species. Species in nature are of...

BACKGROUND The spread of PRRSV among pig herds has been investigated experimentally, but few observational studies have investigated this subject. Because PRRSV is endemic and live modified vaccines are used in Ontario, the spatial and temporal distributions of 6 PRRSV genotypes were investigated in the province during the period from 2004-2007. The purpose was to find evidence of spread of PRR...

We report a case of porcine reproductive and respiratory syndrome (PRRS)virus infection that appeared to spontaneously stop spreading. We compared serologic profiles of this 250-sow farm (herd A) with those of another 300-sow farm (herd B), both with a previous history of PRRS. In November 1992, we collected serum samples from pigs of different age groups (from I week to 3 years old) from both ...