Peptic Ulcer - An open sore that develops on the inner lining of the stomach or upper small intestine.⏎
Nerve Toxin - Also called neurotoxins, these refer to poisonous substances that cause damage to cells in the nervous system.⏎
Reproduction - The process by which parent organisms create new offspring by either sexual or asexual means.⏎
Pandemic - An increase in the occurrence of a particular disease over a very large region, such as a continent or the entire globe, that is greater than what is expected over a given period of time.⏎