English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Nineteen heifers and three male co-twins, originating from heterosexual twin pregnancies, were analysed with the use of cytogenetic and molecular techniques. A large number (50&amp;ndash;400) of Giemsa stained metaphase spreads were studied and the proportion of XX and XY cell lines was calculated. The presence of two genes &amp;ndash; SRY and AMEL (AMELX and AMELY) &amp;ndash; was also analysed. Both approaches facilitated the identification of the XX/XY chimerism in 17 females and three males. The proportion of the co-twin cell line ranged from 1 to 99%. In two females no chimerism was detected: (1) 60,XY male chromosome complement in all 400 metaphase spreads; SRY-positive, AMELY-positive, AMELX-positive and (2) 60,XX female chromosome complement in all 200 metaphase spreads; SRY-negative, AMELY-negative, AMELX-positive. The usefulness of different techniques for the diagnosis of freemartinism is discussed. &amp;nbsp;

The ambiguity of freemartinism diagnosis in cattle revealed by cytogenetic and molecular techniques