Stress can cause feelings of unease, anxiety, frustration, nervousness, fearfulness, or helplessness. When stressed, you may notice changes in your sleep, appetite, or energy level. Know how to reduce your stress.
This photomicrograph depicted a female, Schistosoma mansoni trematode, that was photographed, while en copula, or during the mating process, and had intimately coupled with a smaller male worm.
