How to diagnose 'persistent infection' that leads to gastritis, gastric ulcers, and gastric cancer —Helicobacter pylori ...

A cell sitting in fluid looks like one of the most passive things in biology. Nutrients drift toward it on the aimless ...

A seventh grader from Palatine, Illinois, has turned eggshells into calcium carbonate crystals and used them to investigate ...

A new review proposes an anatomy-guided framework in which the bladder, prostate and kidney each demand distinct nanomedicine ...

A two-year Chinese field trial shows that partially replacing chemical fertilizers with peanut shells and mushroom residue boosts soil organic carbon, enzyme activity, and beneficial microbes in ...

IIT Gandhinagar researchers find that active enzymes can accelerate molecular movement outside cells and boost transferrin ...

You don’t need to retest for COVID-19 if your symptoms have cleared or are improving. A positive PCR test may still occur weeks later, but it doesn’t mean you’re contagious. A positive COVID-19 test ...

A dark line on your home COVID test usually means you’re positive and have a lot of the virus. Even if the line is faint, consider the test positive and be cautious to avoid spreading COVID. The test ...

Testing for respiratory viruses saves lives and helps people decide what to do next, like getting treatment to reduce risk of severe illness and taking steps to lower chances of spreading a virus to ...

Planned Parenthood and other community health centers may also offer free or low-cost HIV, STI, and HCV testing. Visit each site for details on services, locations, open hours and other information.

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