...Jarmila Janatova; Alfred K. Cheung; Charles J. Parker Conventionally, complement activation by biomedical polymers has been evaluated by determining the C3a concentration in the fluid phase only. According to this criterion, biomaterials such as hemodialysis membranes made from cellulosic...

...Edward L. Morgan Bioactive C3a and C5a fragments derived from the human complement compounds C3 and C5, respectively, possess immunoregulatory activities. C3a and C5a differentially influence in vitro immune function. C3a was found to be a potent suppressor of antigenspecific and polyclonal...