ID 143580739 © VectorMine | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
anatomy atomic autoimmune awake awareness bed biology brain cataplexy causes cells compared control diagnosis diagram disease disorder disruption dream educational emotion explanation gene hallucinations illness illustration immune infographic labeled medical medicine molecular muscle narcolepsy neurological nightmares nighttime paralysis psychology scheme signs sleep sleepiness strength symptoms system treatment types vector weakness