START START FOUNDATIONS FOUNDATIONS How-to 1 How-to 1 FORMATION FORMATION How-to 2 How-to 2 SYSTEMS SYSTEMS PROBLEMS PROBLEMS BIOCHEM GENETICS GENOMICS MOL. BIO STEM CELLS, CLONING REC. DNA CELL TYPE 3D STRUCTURE CELL BIOL VIRUSES CANCER HUMAN DISEASE LIFE LIFE NERVOUS FUTURE FUTURE IMMUNE Slide 2 - 7.013 - 5/9/07 Virus: from the Latin noun virus, meaning toxin or poison “A virus is a bit of nucleic acid surrounded by bad news.” Sir Peter Medawar Slide 3 - 7.013 - 5/9/07 Viruses: Size and Shapes Slide 4 - 7.013 - 5/7/07 Herpes Simplex Virus Ebola Virus http://phil.cdc.gov/PHIL
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STARTSTARTFOUNDATIONSFOUNDATIONS
How-to 1How-to 1 FO
RM
AT
ION
FO
RM
AT
ION
How-to 2How-to 2
SYSTEMSSYSTEMSPR
OB
LE
MS
PR
OB
LE
MS
BIOCHEM GENETICS GENOMICSMOL. BIO
STEM
CELLS,
CLONING
REC. DNA
CELL
TYPE
3DSTRUCTURE
CELL BIOL
VIRUSES
CANCER
HUMAN
DISEASE
LIFELIFE
NERVOUS
FUTUREFUTURE
IMMUNE
Slide 2 - 7.013 - 5/9/07
Virus: from the Latin noun virus,
meaning toxin or poison
“A virus is a bit of nucleic acid
surrounded by bad news.”
Sir Peter Medawar
Slide 3 - 7.013 - 5/9/07
Viruses: Size and Shapes
Slide 4 - 7.013 - 5/7/07
Herpes
Simplex
Virus
Ebola Virus
http://phil.cdc.gov/PHIL
ATTACHMENT
EN !DOSOME
ESCAPE
Fig. 13.4 modified
Endocytosis of virus and escape from endosome/lysosome
Slide 5 - 7.013 - 5/7/07
HIV-1 ON SURFACE OF T CELL
Slide 6 - 7.013 - 5/7/07
ATTACHMENT
EN !DOSOME
Fig. 13.4 modified
RNA
REPLICATION Influenza A
Life Cycle
Slide 7 - 7.013 - 5/7/07
Fig. 19.17
The TCR-MHC complex
(MHC Class I or
MHC Class !II)
(CD4 or CD8)
(7-11 aa peptide)
Slide 8 - 7.013 - 5/9/07
Slide 9 - 7.013 - 5/7/07
Vaccine types Example Good Bad
Killed Salk Polio safe not highly protective
Live attenuated Sabin Polio mimics disease possible reversion