RT Book, Section
A1 Wang, Fred
A1 Kieff, Elliott
A2 Kasper, Dennis L.
A2 Fauci, Anthony S.
SR Print(0)
ID 1141410493
T1 MEDICAL VIROLOGY
T2 Harrison's Infectious Diseases, 3e
YR 2017
FD 2017
PB McGraw-Hill Education
PP New York, NY
SN 9781259835971
LK accessbiomedicalscience.mhmedical.com/content.aspx?aid=1141410493
RD 2025/04/23
AB Viruses  are  obligate  intracellular  parasites.  They  consist  of  a  DNA  or  RNA  genome  surrounded  by  protein.  They  may  also  have  an  outer-membrane  lipoprotein  envelope.  Viruses  can  replicate  only  within  cells  because  their  nucleic  acid  does  not  encode  many  enzymes  necessary  for  the  metabolism  of  proteins,  carbohydrates,  or  lipids  or  for  the  generation  of  high-energy  phosphates.  Typically,  viral  nucleic  acids  encode  messenger  RNA  (mRNA)  and  proteins  necessary  for  replicating,  packaging,  and  releasing  progeny  virus  from  infected  cells.