Biology Final

There once was a blood cell named Leuk(ocyte),

Who helped those who wanted to puke.
He called up his friends
To kill Antigens
Their names were Macrophage and Neuk(trophil).

Leuk fights the infectious disease(s)

Without him we'd be on our knees

(The measles and mumps

Keeping us in the dumps

With never a moment of ease).

I'm glad that I have this good friend

Immunity is what he send(s)!

I know if I'm sick,

The time-- it will tick--

But soon it (the illness, not time) will come to an end.