A mitogen is a chemical substance that encourages a cell to commence cell division, triggering mitosis. A mitogen is usually some form of a protein. Mitogenesis is the induction (triggering) of mitosis, typically via a mitogen. Mitogens trigger signal transduction pathways in which mitogen-activated protein kinase (MAPK) is involved, leading to mitosis.
Lymphocytes can enter mitosis when they are activated by mitogens or antigens. B cells specifically can divide when they encounter an antigen matching their immunoglobulin. T cells undergo mitosis when stimulated by mitogens to produce small lymphocytes that are then responsible for the production of lymphokines, which are substances that modify the host organism to improve its immunity. B cells, on the other hand, divide to produce plasma cells when stimulated by mitogens, which then produce immunoglobulins, or antibodies. Mitogens are often used to stimulate lymphocytes and thereby assess immune function. The most commonly used mitogens in clinical laboratory medicine are:
Skies are crying, I am watching
Catching teardrops in my hands
Only silence, as it's ending, like we never had a chance.
Do you have to make me feel like there's nothing left of me?
You can take everything I have
You can break everything I am
Like I'm made of glass
Like I'm made of paper
And go on and try to tear me down
But I will be rising from the ground
Like a skyscraper, like a skyscraper
As the smoke clears
I awaken and untangle you from me
Would it make you feel better to watch me while I bleed
All my windows still are broken but I'm standing on my feet
You can take everything I have
You can break everything I am
Like I'm made of glass
Like I'm made of paper
And go on and try to tear me down
But I will be rising from the ground
Like a skyscraper, like a skyscraper
Go run run run, I'm gonna stay right here
Watch you disappear, yeah
Go run run run, yeah, it's a long way down
But I'm closer to the clouds up here
You can take everything I have
You can break everything I am
Like I'm made of glass
Like I'm made of paper
And go on and try to tear me down
But I will be rising from the ground
Like a skyscraper, like a skyscraper
Like a skyscraper, like a skyscraper