Expression systems are genetic constructs (a gene encoded by DNA) that are designed to produce a protein, or an RNA (ribonucleic acid), either inside or outside a cell. Expression systems are used in ...

Free radicals are unstable molecules that can damage DNA, leading to diseases like cancer. Antioxidants from foods can neutralize free radicals and reduce their harmful effects. Oxidative stress ...

Flat affect is when someone can't show their emotions properly due to various conditions. Flat affect is a symptom, not a condition, and its treatment varies by cause. People with conditions like ...