cells

What: There are many types of cells. Red blood cells, immune cells, liver cells and thousand more. In a complex organism they fit together as a somewhat harmonious whole. You see the same type of structural harmony with assembled Legos. There are many shapes and sizes of Lego and several colors. They can be put together to make some thing that makes sense, a house, a plane or just about anything else. The linked LegoMan is a good approximation. Of course if there were round Legos, it would be an even better approximation.

Writer: LucretiaGermanica

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Date: Feb 4 2012 4:18 PM

What:

"Because NK cells are like poison dart guns for the bad guys. They "kill" by releasing nasty little granules that cause their target to die "

Writer: Jonny Bowden

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Date: Dec 20 2014 11:00 AM

What:

"The NK cells are like little chemical factories that produce highly potent substances that attach themselves to and kill anything that is foreign to the body. "

Writer: Francisco Contreras

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Date: Dec 20 2014 11:01 AM

What:

"Natural killer (NK) cells are like cytotoxic T cells. They respond rapidly to viral infection of cells and to newly formed tumors, acting at around 3 days after infection."

Writer: Daniel D. Chiras

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Date: Dec 20 2014 11:03 AM

What:

"Natural killer cells (NK cells) are like T cells in that they are capable of killing other cells. However, unlike T cells, these NK cells are not produced in response to a specific antigen."

Writer: Tammy S. Race McCormick

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Date: Dec 20 2014 11:05 AM

What:

"This defense mechanism helps ward off diseases from entering the body. It builds blockades, and send the WBCs to help engulf the unwanted particles. Antigens are referred to as: "molecules the immune system recognizes as foreign to the body" (Mader 130). The B cells and T cells are like sensors, they recognize antigens and bind to them with their receptors. "

Writer: manderz

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Date: May 7 2014 5:41 PM