The Random Thread: Inspired by the last Random Thread

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Meet and greet folks off the street
So make sure that your underwear's clean.
Because you've only got a second
To make a good impression
In a Mix and Mingle Machine!
 
Not watching X Factor. Can hear it in the other room.

My presentation is on the non-specific responses to infection. It seems to get more boring as I head further through the book -_- At least I get to write about sponges. That's good, right?
 

My potential Christmas list is longer than I expected...
 
How do cells recognise each other?
The proteins, in particular glycoproteins, that protrude from the cell surface membrane are thought of to be important in cell recognition in a few ways. Similar sugar recognition sites can bind to each other to hold cells together. When tissues & organs form in embryonic development, this binding can be very significant. Glycoproteins also act as antigens which are recognised by white blood cells during specific responses to infection. An antigen is a substance that stimulates the production of an antibody when it enters the body. They are mainly chemicals on the surface of the cell like proteins, glycoproteins, and carbohydrates. They can also be toxins made by bacteria, or are whole microorganisms like bacteria or viruses.

Early evidence for cell recognition
Sponges are thought to be the most primitive of multicellular animals. Until 1765, people thought they were plants. They are made up of simple cells that group together, but don't move. The cells show some differentiation into several types concerned with food extraction and water flow, but they don't have organs or organ systems. Early in the 20th Century, H.V. Wilson split sponges into their individual cells by passing them through sieves. The cells started moving and kept moving until they met another cell. Groups of sponge cells formed, demonstrating cell recognition, and the clusters of sponge cells became new animals altogether.

Inflammation


Fever


Phagocytosis


Interferons


Interferon in medical treatments

Blah -_-
 
Fevers are quite interesting actually. Your body temperature rises when you're ill because it slows the reproduction of pathogens in the body, and also your specific response systems work better when your body is at a high temperature. In bacterial infections, your temperature stays high throughout until you get better. In viral infections, the temperature raises everytime viruses burst from your cells, then drops back to normal.
 
Why, so is phagocytosis! It involves white blood cells that absorb and digest pathogens.
 
Finished what I am saying, now to narrow all of it down to what i'll put on the Powerpoint...
 
I can't find normal pictures for cell recognition. I guess diagrams are more helpful...
 
I feel like i'm on Twitter, except I can use more then 140 characters...
 
Finally finished. Huzzah! Didn't take too long. Sure it's been 3 hours since I started, but I spent almost half of that not doing the work :p
 
John Krasinski+tighty whities=the answer to my prayers. :cloud9:
 
I need help thinking of a creative title for a blog. I want it to do with either the Beatles or The Office. Can anybody help me out?
 
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