Beschreibung:
<jats:p> The CH<jats:sub>2</jats:sub>Cl<jats:sub>2</jats:sub> crude extract and a fraction enriched with halogenated monoterpenes of the Brazilian red alga Plocamium brasiliense were evaluated for cytotoxicity and against the virus HSV-1. The extract showed low cytotoxicity compared with the fraction containing monoterpenes. The crude extract showed, in vitro, a high reduction of infectivity of the virus HSV-1. </jats:p>