This protocol is concerned with the use of iodixanol gradients in an analytical mode to study the membrane localization of a particular protein or function. Continuous gradients are best suited to this task. One of the protocols described in this protocol starts with a discontinuous gradient, but since the gradient is centrifuged at 174,000g for 16 h it will become continuous by diffusion. - [Read Fractionation of Yeast Membranes in Pre-Formed Continuous Iodixanol Gradients]
For all the transgenic or other mouse researchers out there who have had to explain why colony infections are not just bad for the welfare of the animals concerned, but may invalidate the ongoing studies as well. - [Read Natural Pathogens of Laboratory Mice and Rats]