As a result, your immune system attacks healthy cells. Depending on the type, an autoimmune disease can affect one or many different types of body tissue. It can also cause abnormal organ growth and changes in organ function.There are as many as 80 types of autoimmune diseases.s a result, your immune system attacks healthy cells. Depending on the type, an autoimmune disease can affect one or many different types of body tissue. It can also cause abnormal organ growth and changes in organ function.
The diet of pelicans usually consists of fish, which can be up to 30 cm (1 ft) long, but amphibians, turtles, crustaceans and occasionally birds are also eaten. Aquatic prey is most commonly taken at or near the water surface.
Confidence votes 26. A pelican is a large water bird with a distinctive pouch under the beak, belonging to the bird family Pelecanidae. Along with the darters, cormorants, gannets, boobies, frigatebirds, and tropicbirds, pelicans make up the order Pelecaniformes.Modern pelicans are found on all continents except Antarctica. pelican is a large water bird with a distinctive pouch under the beak, belonging to the bird family Pelecanidae.