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Expression of lamprey MCa (a) and MCb (b) receptor mRNA as determined by RT-PCR. The tissues, controls and expected sizes of the PCR products are denoted at the top of each figure. Ethidium bromide stained agarose gels are presented on top and autoradiographs of Southern blots, hybridised with gene specific probes, are shown below. The PCR and the hybridization were performed three times with qualitatively similar results.
