these studies have shown that an antiserum raised to whole l cells has a much narrower reactive spectrum with l-cell membrane antigens than might be imagined and has identified a 42,000-mw membrane protein as an important immunogen which itself elicits a potent immune response resulting in an antibody capable of mimicking the cell stimulatory properties of the original antiserum .
C0003241
antibody
C0020960
antiserum