
Search for potent immunostimulating agents from plants and other natural sources.- Chemistry, analysis and immunological investigations of Echinacea phytopharmaceuticals.- Immunologically active polysaccharides from Echinacea purpurea plant and cell cultures.- Clinical investigations...

The human immune system, despite having its own sophisticated defence mecha- nisms, is inferior to bacteria and viruses with respect to adaptability. Furthermore, our immune system is increasingly exposed to detrimental effects, that is immuno- suppressive environmental consequences,...