Sagot :
The thymus is the infection fighting immune system gland which is larger in children than adults. So if a person doesn't have a thymus gland when he/she was born then that person would be very sickly because he/she got nothing to fight for any infection or diseases that's gonna come along her/his way!
A person might recently be in sick or in worse, death might come on its way because of a very poor antibodies to protect it from harmful organisms causing disease.