A vaccination is a treatment which makes the body stronger against a particular infection. The body fights infections using the immune system, which is made up of millions upon millions of cells including T cells and B cells.
Pink eye in cattle, medically known as infectious bovine keratoconjunctivitis, is a contagious bacterial infection of the eye. Cattle pink eye is different from human pink eye, which, although usually infectious, is not highly contagious. Pink eye in cattle also looks clinically different and is usually much more severe than the disease in humans. Pink eye in cattle is most commonly caused by a bacterium called Moraxella bovis. This crafty microbe uses tiny hair like structures called pili to attach to the white part, or the conjunctiva, of the eye and cause damage.
One way to see how eyes are important to different types of animals is to look at their skulls. The main picture shows some cow skulls. One thing to notice is that cows have their eyes on the sides of their heads.That means that they can see things all around them, but there are almost no places that the cow can see with both eyes. As humans (skull in lower right inset), we have both eyes in the front of our heads.ne thing to notice is that cows have their eyes on the sides of their heads. That means that they can see things all around them, but there are almost no places that the cow can see with both eyes. As humans (skull in lower right inset), we have both eyes in the front of our heads.