The subject invention provides systems and methods that facilitate AIDS vaccine cocktail assembly via machine learning algorithms such as a cost function, a greedy algorithm, an expectation-maximization algorithm, etc. The doping level of the emitter region of an MCT is kept high everywhere except in the channel in order to provide a fast turn-off time for the MCT. The common circuit board has a first surface and a second surface. The storage region defines openings allotted to removably mount connector storage housings at the connector storage region. Preferably, data is transferred in a number of blocks in the data frame.