a common infectious illness that causes fever and headache

(a)  

something, especially a new organ, that has been transplanted

(a)  

illness of people caused by infection or a failure of health

(a)  

to experience physical or mental pain

(a)  

a plant or animal that has the same genes as the original from which it was produced

(a)  

to make someone healthy again

(a)  

the process in which someone or something grows and becomes better

(a)  

to stop something from happening or someone from doing something

(a)  

to do something to improve the condition of an ill person

(a)  

the reason why something bad happens

(a)  

the act of finding something that had not been known before

(a)  

detailed study of a subject in order to discover new information

(a)