A study shows that the ratio of two white blood cell types can predict unhealthy aging.

In older adults, a greater proportion of certain cells foretold chronic disease and death a decade later.

The findings point to a blood test for immune stress before symptoms appear.

The Alliance for Clinical Trials in Oncology (Alliance) today announced that the U.S. Food and Drug Administration has approved the immunotherapy drug atezolizumab (Tecentriq^®) in combination with fluoropyrimidine and oxaliplatin chemotherapy, for the adjuvant treatment of patients with stage III colon cancer with deficient deoxyribonucleic acid (DNA) mismatch repair (dMMR).

Since the outbreak of the COVID-19 pandemic, researchers have been trying to figure out why someone develops a mild or severe case. One way to do that would be through looking at T-cells, which are white blood cells that mount an immune response — and specifically CD8⁺ T cells, “killer” T-cells that have been shown to effectively fight back against COVID-19 infections.

UC San Diego biologists have unraveled the genetic adaptation that gave butterflies the ability to see rich, vivid color in their environment. The genetic change produces an additional photoreceptor that expands color vision for locating nectar and other butterflies.