Pharmacological Activity of High Molecular Weight Micro-Algal Exudates

High molecular weight exudates recovered from the culture media of the marine Chlorella vulgaris Beij enhance the aggregation and adhesion of these algal cells to glass surfaces. These materials also stimulate the aggregation of pigment granules in the teleost melanophore. All three of these activities are caused by adrenalin (10^-6M). Microalgal aggregation, adhesion and pigment granule dispersion in an excitable cell appear to be similar in the nature of the receptor site and/or the molecular group that stimulates these activities.