Now that we know about both prokaryotic and eukaryotic cells, let's look at the endosymbiosis theory. This theory suggests that mitochondria and plastids in eukaryotic cells were once independent prokaryotic cells.
Avian influenza (AI) is an infectious viral disease of birds (especially wild water fowl such as ducks and geese), often causing no apparent signs of illness. AI viruses can sometimes spread to domestic poultry and cause large-scale outbreaks of serious disease.
Get help from a doctor now âº. For more info CDC: Influenza type a is bird flu. Influenza type b infects humans and seals. Places where b strains have been are: shanghai, yamagata, hong kong, and victoria. To find more info best to contact cdc. Both type a & b have the same flu symptoms. High fever, severe aches and pains, generalized weakness.