Dec. 18, 2024 — Scientists have generated human stem cell models which contain notochord -- a tissue in the developing embryo that acts like a navigation system, directing cells where to build ...
By measuring the number of CD4 cells circulating in your blood, a healthcare provider can determine the relative strength of your immune system if you have HIV. This is done with a simple blood test ...
Jan. 3, 2025 — Biologists have shown that the surfaces of plant leaves are coated with a diverse array of RNA molecules. The finding suggests that the RNA present ...