However, embryonic infection that does not result in embryonic death
is the basic requirement for successful vertical transmission.
This virus is responsible for bovine viral diarrhoea, mucosal disease, poor conception and early embryonic death
, foetal mummies, the birth of brain-damaged calves, eye defects in newborn calves and a lower resistance to other diseases.
It would have been clearer to either present a nonthreshold model or to leave out the >1 rem threshold dose for embryonic death
during the preimplantation phase.
The storage materials used were determined not to have any influence on early and late embryonic death
The condition does not prevent conception, but it does lead to early embryonic death
in the majority of cases, explaining why it initially appeared the stallion had impregnated his mares, only for the pregnancies to disappear.
In those cases of embryonic death
, the heart rate dropped rapidly between 2 measurement points.