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A 26-year-old business executive complained of a dull pain (heartburn) behind the sternum. The pain was postprandial (occurred after meals) and disappeared within a few minutes to an hour. It was often associated with belching and often was worse on lying down or on exertion after heavy meals. Sometimes it […]

Go to this or other histology links you might find: http://www.bio.davidson.edu/courses/Immunology/Bio307.html These all have either cartoons and/or histology sections of all the important primary and secondary lymphoid organs that we talked about. Click through their sections, readings, and animations of primary and secondary lymphoid organs. In particular: 1. Try to […]

Fishes 1. What are the two major classes into which fishes are divided? 2. From which features do osteichthyes and chondrichthyes get these names? 3. What are the major features of fishes associated to the habitat where they live? 4. Comparing to cyclostomes (primitive vertebrates) what are the major novelties […]

Question: We are isolating DNA from a Marcian. THeir DNA turns out to be very very tiny, so we will use a very dense agarose gel to analyze the DNA. So, instead of the 1 percent agarose gels that we normally would use in lab, you are tasked with making a […]