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Background: Different variables have been studied to predict the probability of recurrence and metastases in patients diagnosed of Ewing's sarcoma. In this study, we have evaluated the presence of tumor cells of Ewing's sarcoma (ES) in peripheral blood samples through a reverse-transcriptase polymerase chain-reaction (RT-PCR).Material and Methods: Forty-two patients diagnosed of localized Ewing sarcoma...
Urocanic acid Cis isomer (CIS-UCA) is considered a possible cutaneous photorreceptor responsible of inflammatory phenomena secondary to UV-B radiation. Several experiments in animals show the inhibitory action of CIS-UCA on cell immunity, but the action of CIS-UCA on the synthesis of cytokines in a culture of keratinocytes remain unknown.Long-term cultures of normal human keratinocytes were prepared...
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