Scientist holding DNA gel in front of samples for testing in laboratory

Scientist holding DNA gel in front of samples for testing in laboratory

Scientist testing samples in lab

Worker testing electrical components in laboratory

Clinical testing

Clinical testing

Worker testing equipment on production line

Clinical testing

Worker holding and testing yellow spring

Clinical testing

Female scientist at workstation testing oil samples

Young woman scientist viewing blood tube during clinical testing of medical samples in a laboratory

Laboratory tests

Genetic testing of meat, conceptual image

Genetic testing of meat, conceptual image

Genetic testing of meat, conceptual image

Genetic testing of meat, conceptual image

Illustration demonstrates the first step when obtaining clean catch specimen. The female client sits on the commode and separates her labia with her nondominant hand.

Illustration demonstrates the second step when obtaining clean catch specimen. The female client cleanses her peritoneum, washing from front to back, using a cotton ball or wipe in only one stroke and then discarding it.

Genetics research

DNA Research

Medical test tube with blood and DNA

Microscope and chemicals

DNA Research

Laboratory worker testing oil samples