A germ enters a body by going through all your bodies defences
Germ fighters in the body are carried by the blood.
When the body is invaded by a germ, the immune system responds by recognizing the germ as a foreign invader. Immune cells work to neutralize and destroy the germ to prevent infection and illness. This process may involve inflammation, production of antibodies, and activation of other immune responses.
The endoderm is the germ layer that will become the inner lying of the body cavity as well as on the surface of the organs. Meaning of endoderm is: Endo- = within, plus derm = germ or from.
A sneeze is your body's way to "shoo out" a germ.
A sneeze is your body's way to "shoo out" a germ.
pseudocoelom
White
This is the concept of immunization, the immune system identifies the "germ" as an intruder and develops antibodies to fight it.
It depends somewhat on the age of the child. The most simple explanation for a child could be something like: A vaccine is a medicine that can keep germs from making you sick. You take this medicine ahead of time, when you are not sick, so if the germ ever comes around, your body already knows how to fight it before the germ can make you sick. The way it knows how to do that is with a vaccination. The vaccination shows your body exactly what that germ looks like. Then your body makes up some of its own medicine that can kill that exact germ. It keeps the medicine to kill that germ in storage. It will use it if it ever sees that germ trying to give you an infection. This makes it all easier and quicker for your body to fight the germ before the germ can make you sick. It can do it faster after the vaccination because it already has the matching medicine stored up. It doesn't have to start from scratch.
How does hydrogen enter the human body?
endoderm
neurone