The total risk was calculated by summing the risks of first-time donors and repeat donors.
The incidence rates of HCV and HBV were higher among first-time donors than repeat donors.
High-level aminoglycoside resistance could be transferred by conjugation with frequencies between 10-4 and 10-6 only from four rmtB-positive donors through repeat attempts including using filter mating.
None of the reported donors returned repeated telephone calls.
In the closing days of the quarter, the Obama campaign blasted donors with repeated appeals seeking last-minute contributions, hoping to reach a benchmark of one million total donors.
In order to include a 'reference' for BMSC that were all obtained from OA-affected donors, we repeated key experiments with ASC which served as 'healthy' controls.
From 26 November 2004 to 15 February 2005, in compliance with notification from the General Office of the Ministry of Health, registration and blood sampling of former paid blood donors was repeated, so that HIV antibody screening could be carried out.
5. Continue the cultivation process once a gift has been made – if you want a donor to become a repeat donor, the relationship must always be nurtured.
Based on the results of the literature, the French authorities issued guidelines questioning the need for EPO when policies of restrictive transfusion criteria and a single donor for repeated transfusions were applied [ 18].
Stevens and Hauser (2004) argue that, aside from the prerequisites outlined by Trivers (1971; recipient benefit > donor cost, repeated interaction, cheater detection), there are three additional cognitive requirements for the development of contingency, namely the ability to overcome temporal discounting biases, the capacity for numerical discrimination, and the capacity for learning and memory.
