In her third paper on cyclols (1936), Wrinch noted that many "physiologically active" substances such as steroids are composed of fused hexagonal rings of carbon atoms and, thus, might be sterically complementary to the face of cyclol molecules without the amino-acid side chains.
The extracted mistletoes are composed of many biologically active substances.
Many biologically active substances in the microenvironment, including growth factors, chemokines and various other locally active agents, can induce and regulate cell migration and tumour invasiveness.
The Corydalis sp. tubers are a rich source of many biologically active substances, with the extensive use in European and Asian folk medicine.
Colostrum contains various nutrients (protein, fat, carbohydrate, water- and fat-soluble vitamins and minerals) as well as many biologically active substances such as immunoglobulins, antimicrobial factors, growth factors and others [ 1- 4].
Interestingly, this may be the fate of many circulating endogenous compounds such as hormones and many other biologically active substances which are neither monitored nor replaced during ECMO.
Another change observed during germination is the formation and accumulation of many types of active substances, such as polyphenols, saponins, vitamin C, etc.
Although we found the release of two cytokines from pericytes was specifically affected, it is likely that the release of many other immune active substances is similarly modulated.
Recent identification of many important biologically active substances on milk and its derivatives has attracted much attention from the scientific community.
