Advanced Polymer Systems Inc. announced Thursday that ithas extended its agreement with Germany's Lancaster GroupAG for exclusive marketing rights to the Redwood City, Calif.,company's Melanosponge sun protectant system. APSincorporates genetically engineered melanin in its Microspongedelivery system to create Melanosponges, which the companysaid mimic melanosomes, the skin's natural defense againstboth ultraviolet A and B radiation.

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