Stool contains numerous sloughed intestinal epithelial cells, a reliable source of DNA for non-invasive genotyping. ... The droppings were scooped up into a 1.5-ml micro-centrifuge tube ...

A cardboard centrifuge separates blood cells from plasma String ... (of blood, urine, sputum and stool) for analysis. Tests to spot HIV, malaria and ... sandwiching the tubes between them.

Pipette tips and centrifuge tubes are in short supply as a result of the pandemic. Credit: Justin Tallis/AFP/Getty. Scientists around the world are scrambling to secure basic supplies in the wake ...