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Learn about the different species of lobsters that live in the Pacific and Atlantic oceans, and why they are not the same as the American lobster. Find out how to eat sustainably caught red rock lobsters from Mexico.
Blood is red because it contains haemoglobin, a protein with iron at its core. Haemoglobin carries oxygen and can change colour depending on the metal or drugs it binds to.
Learn why mature red blood cells lose their nucleus and DNA when they differentiate from immature cells. Find out how this helps them carry oxygen and squeeze through capillaries.
Aspirin can cause bleeding from the stomach and anaemia in some patients, but not in most. The web page does not answer why Aspirin is given to a patient with a low RBC count.
Sunburn is caused by inflammation of the skin due to UV damage. The web page explains the molecular and cellular mechanisms of sunburn, and warns about the risks of sunbeds and sun exposure.
Bulls can see red, but they can't distinguish it from green. They only have one visual pigment in that part of the spectrum, which means they see the world like a red-green colour deficient person.
Bulls can see red, but they have only two colour-detecting pigments in their eyes. This means they see colours like a colour blind person, but not exactly the same way. Red is not special for bulls, but it may be a cue for excitement or aggression.
The process is very likely to be the same as any other hair colour. All you're doing is losing from the hair the ability to add some colour.
Learn the difference between mixing paint and mixing light, and how it affects the colours you see. Find out why red and green light produce yellow, and how printers use a different palette than TVs.
Chris - Is it just red wine though Roger? Because lots of people say you have to drink red wine, white wine's no good. Beer's no good. Roger - Well, let me provide you with some evidence. Alsace has the lowest longevity in France. And it has some of the highest heart disease. That's a white wine drinking area. Chris - So it is specific to the ...