Taking Organs from Other Animals

Because the transplant waiting list continues to grow, scientists have explored nonhuman animals as a possible source of organs. Despite the shock and repulsion it sometimes causes, the idea of xenotransplantation, or transplantation of an organ from one species to another, deserves some serious consideration. 

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Fermentation broths tend to be very dilute and contain complex mixtures of inorganic or organic substances. The recovery of a soluble product (MW range 500-2500 dalton) such as an antibiotic, organic acid or animal vaccine from fermentation broth takes several processing steps. The first step is the clarification of broth to separate the low molecular weight soluble product from microorganisms and other particulate matter such as cells, cell debris, husks, colloids and macromolecules from the broth me-dium.l l In this step, microporous membrane filters (MWCO 10,000 to... 

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