Antigenic Shift - the Spread of a New, Mutated Virus

[postlink]https://nursetube.blogspot.com/2010/03/antigenic-shift-spread-of-new-mutated.html[/postlink]http://www.youtube.com/watch?v=c-36EiSejFUendofvid
[starttext]Only the influenza Type-A virus is capable of what is known as antigenic shift.
The current flu in circulation is an entirely new, mutated pathogen formed from elements of human, pig, and avian virus strains.Overflowing with mutated viruses, the respiratory epithelial host cells of the pig eventually burst open and circulate the new flu virus into the susceptible human population. [endtext]

Antigenic Shift - the Spread of a New, Mutated Virus

Macrophages engulfing pathogens

[postlink]https://nursetube.blogspot.com/2010/03/macrophages-engulfing-pathogens.html[/postlink]http://www.youtube.com/watch?v=Jg8Dob35Rp4endofvid
[starttext]Macrophages engulfing pathogens. [endtext]

Macrophages engulfing pathogens

Bacteriophage Fighting E. Coli

[postlink]https://nursetube.blogspot.com/2010/03/bacteriophage-fighting-e-coli.html[/postlink]http://www.youtube.com/watch?v=F5WEDcNcJjYendofvid
[starttext]T4 bacteriophages targeting E. coli bacteria.


Bacteriophages are small viruses that infect bacteria and kill them by multiplying and essentially filling the bacterial cell to bursting.

[endtext]

Bacteriophage Fighting E. Coli

The Stages of Mitosis

[postlink]https://nursetube.blogspot.com/2010/03/stages-of-mitosis.html[/postlink]http://www.youtube.com/watch?v=nPG6480RQo0endofvid
[starttext]Stages of Mitosis, a promotional piece, begins with a fly-through of cells preparing to undergo mitosis (cell division).


Upon entering a cell we are introduced to various organelles of the inner cell and the key events involved in mitosis.
Cell division involves 7 key stages resulting in the splitting of the nucleus, and ultimately, cell division[endtext]

The Stages of Mitosis

Structure of DNA

[postlink]https://nursetube.blogspot.com/2010/03/structure-of-dna.html[/postlink]http://www.youtube.com/watch?v=wMTRBej_jwMendofvid
[starttext]This a 3D Animation Showing the structure of the Human DNA[endtext]

Structure of DNA

Streptococcus Pneumoniae

[postlink]https://nursetube.blogspot.com/2010/03/streptococcus-pneumoniae.html[/postlink]http://www.youtube.com/watch?v=GO3tIhoZvOoendofvid
[starttext]Sequence showing Streptococcus pneumoniae, a pathogen that is the most common cause of bacterial meningitis in adults and children. Over the last decade, resistance has become common and prevalence of strains resistant to multiple classes of drugs is increasing.
[endtext]

Streptococcus Pneumoniae