Groups that made the transition to cattle pastoralism often built houses in small villages, where they lived for at least part of the year.
Livers obtained from two cattle negative for infection were included as control tissue.
Quarantine measures following outbreaks of disease regularly meant that cattle owners could not sell stock outside the district.
The most important one being the virulence of the material; unless the cattle are protected by chemoprophylaxis the majority would die.
Developmentally related changes in the uptake and metabolism of glucose, glutamine and pyruvate by cattle embryos produced in vitro.
A standardized questionnaire was developed and administered to the cattle owner or manager.
Digestion by cattle, and storage within a manure heap for 6 months or longer, further reduced seed germination.
For this purpose, the distribution of people and cattle would need to be estimated, possibly over large areas.
