Search found 3 matches

by sam2008
Mon Oct 20, 2008 7:20 am
Forum: General Discussion
Topic: Blood-Borne Viruses
Replies: 2
Views: 7899

Re: Blood-Borne Viruses

The most common examples are HIV, hepatitis B, hepatitis C and viral haemorrhagic fevers. Diseases that are not usually transmitted directly by blood contact, but rather by insect or other vector, are more usefully classified as vector-borne disease, even though the causative agent can be found in b...
by sam2008
Thu Oct 16, 2008 6:56 am
Forum: Cell Biology
Topic: transfection
Replies: 2
Views: 3155

Re: transfection

The original meaning of transfection was 'infection by transformation', i.e. introduction of DNA (or RNA) from an eukaryote virus or bacteriophage into cells, resulting in an infection. Because the term transformation had another sense in animal cell biology (a genetic change allowing long-term prop...
by sam2008
Thu Oct 16, 2008 6:54 am
Forum: Evolution
Topic: Bird Evolution
Replies: 9
Views: 12502

Re: Bird Evolution

The evolution of birds is thought to have begun in the Jurassic Period, with the earliest birds derived from theropod dinosaurs. Birds are categorized as a biological class, Aves. The earliest known species of class Aves is Archaeopteryx lithographica, from the Late Jurassic period, though Archaepte...