The reproductive strategy of two congeneric species (Astyanax janeiroensis--AJ and Astyanax hastatus--AH) was assessed, in order to address the costs imposed by different investment patterns, on four major life history characters: migratory behaviour, breeding time, fecundity and egg size. Altitudinal segregation of young and adult individuals plus data from the literature indicated that AJ is ...

introduction: organ donation is one of the surviving procedures which can increase the life expectancy of end-stage patients. inappropriate beliefs and attitude of individuals to organ donation, their poor knowledge, and the socio-economic level are one of the most important barriers for organ donation. therefore, here knowledge and attitude levels among relatives of trauma patients regarding o...

To determine whether PGTa shortens the time to pregnancy or number of embryo transfer in an egg donation program. This was a single-center retrospective study. Of total patients who underwent oocyte at Cegyr between 2016 and 2019 (1181 recipients), 234 recipients were included. All included performed frozen-thawed single transfer, achieving live birth some transfers performed. these, 68 PGT-A (...

Ever since the birth of first baby born through in vitro fertilization 1978, advances reproductive technologies have raised new concerns about outcomes for children. In this article, I summarize research on children assisted reproduction involving a third party, that is, egg donation, sperm and surrogacy, with particular attention to findings longitudinal study heterosexual couples United Kingd...

BACKGROUND Upper age limits for blood donors are intended to protect elderly blood donors from donor reactions. However, due to a lack of data about adverse reactions in elderly blood donors, upper age limits are arbitrary and vary considerably between different countries. METHODS Here we present data from 171,231 voluntary repeat whole blood donors beyond the age of 68 years. RESULTS Blood...

INTRODUCTION Living unrelated kidney donation has a high rate in Iran, where a unique organ procurement model is running. We evaluated feelings and attitude of these donors after kidney donation. MATERIALS AND METHODS A questionnaire was sent to 25 kidney transplantation centers in Iran. It was designed to assess kidney allograft donors in terms of their reason for donation, their feeling aft...