WEST HOLLYWOOD, Calif. — Holiday shopping was in full swing Friday at a boutique on Santa Monica Boulevard, where an automatic sliding door welcomed browsers off the street. Inside the well-lit shop decorated with Christmas wreaths, glass cabinets filled with elixirs, herbal pills and pen-size vaporizers beckoned. The dark wood floors and brand-name displays could have come out of a Sephora cosmetics store. Shoppers have to look past gleaming jars and fancy boxes to find what brought them here — old school marijuana “flower,” the part of the plant that people smoke to get high. The hot products at Alternative Herbal Health Services are tinctures, pills and liquids that contain cannabinoids, such as THC and CBD, that are extracted from cannabis plants. Scientists search for marijuana’s holy grail — consistent highs

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