breakthrough – n. a sudden increase in knowledge, understanding, etc. : an important discovery that happens after trying for a long time to understand or explain something

antibody – n. medical : a substance produced by the body to fight disease

immune system – n. medical : the system that protects your body from diseases and infections

abort – v. to stop something before it is completed because of problems or danger : to stop in the early stages <abort a disease>

actually – adv. in act or in fact

bode – v. to indicate by signs

stage – n. a period or step in a process, activity, or development

beneficial – adj. producing good or helpful results or effects : producing benefits


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