Environmental Research Foundation . . P.O. Box 5036, Annapolis, MD 21403 . .
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To subscribe, E-mail the words . . A competent immune system is essential for health. These effects are manifested as alterations in the immune system that may lead to a decreased quality of life. The effects may not be manifested at hatching or birth and may not be expressed until the animal or human reaches adulthood. Alterations in the developing and mature immune systems may not be recognized as an adverse health effect until long after the exposure.