Hi Neelam,
I don't have much idea about R, but you can try several other online servers for the same.
Biomart http://www.biomart.org/biomart/martview/942da133bec34876002f4e8002ea4cb1 is a general tool that enables you to extract a lot of different...
Ebola virus disease (EVD)or Ebola haemorrhagic fever is a severe and often deadly illness in humans, caused by the Ebola virus. The disease has high mortality rate, killing upto 90% of people who are infected.