No, it is not. This is why very young kids can have transplants and not require immunosuppresives in later life - their immune system adapts to accept a donor organ, because it's too young to reject it. The immune system becomes pretty much fully operational around 1 year old.
1998
The immune system is run by white blood cells which attack any foriegn objects in the body. They grow stronger and begin to recognize sickness which allows you to become fully immune if you have a great immune system.
Without them, the body lacks a fully functioning immune system
IF the immune system is strengthened the person is less susceptible to obtaining infections like pneumonia which can cause death if they don't have a fully functioning immune system
It becomed fully operational in Mid fall of 1942 ater Monowitz was built and Gassing was introduced
It is considered as a vestigial structure.Its function was to house cellulose digesting bacteria in ancient human.But along with the evolution,appendix has lost bacteria in it. Appendix serves as a safe house for useful bacteria when a disease flushes the intestine
a fully operational spaceship
Lungs and respiratory system
No, it takes about 3 days to get into your system fully.
It means that everything that is supposed to work does work
Depending on what Nazi Death Camp, Most camps were fully operational in 1941-1942 due to the Wansee Conference and the Final Solution. (Extermination of the Jews)
The Thymus Gland. It grows slowly until puberty then fully develops thereafter.