Grants, Contracts, RFAs, and RFPs. 1  A grant is a funding mechanism for a particular scientific inquiry that you generate. You come up with the idea, they decide if it's a good idea, and they provide funding for you to do it. In contrast, a contract is a funding mechanism of government agencies or other organizations to obtain specified services or goods.
1 These tests are very good at identifying chlamydia. 2  A test that is positive almost always means the problem is there and is unlikely to be a false-positive test result. 3  A polymerase chain reaction (PCR) test is an example of a nucleic acid amplification test. 4  This test can also be done on a urine sample.
A nested polymerase chain reaction (PCR) specific for Salmonella enterica serovar Typhi was used for the detection of the pathogen in blood, urine, and stool samples from 131 patients with clinical suspicion of typhoid fever.almonella typhi DNA was detected in the urine or stool of 72.9% of the patients diagnosed with typhoid fever. In our study, more urine samples (65.6%) than stool samples (39.5%) were positive for the pathogen.