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Not exactly sure what the question is. There are 5 types of heavy chains, one for each of the classes of immunoglobulins: IgM, IgG, IgD, IgA, and IgE. Each type of heavy chain has a distinct set of cystine cross-links.
The "A" and "B" were arbitrary labels Rosie Franklin gave to the two types of DNA fibers she obtained under different conditions of salt concentration and relative humidity. She thought the A form was a potentially more interesting structure and wavered back and forth as to wheth...
- Wed Oct 29, 2014 11:48 am
- Forum: Cell Biology
- Topic: Diffusion and Fick's law
- Replies: 1
- Views: 4642
The diffusivities (diffusion "constants") are implicit functions of temperature. You don't worry about temperature dependence so much because you almost always use Fick's Laws under isothermal conditions (or at least assume it is isothermal enough).