Complex sentence: Discovered by Tillett and Francis in 1930, it was initially thought that CRP might be a pathogenic secretion as it was elevated in people with a variety of illnesses including cancer, however, discovery of hepatic synthesis demonstrated that it is a native protein.
Split into simpler sentences: Discovered by Tillett and Francis in 1930, it was initially thought that CRP might be a pathogenic secretion as it was elevated in people with a variety of illnesses including cancer. The later discovery of hepatic synthesis demonstrated that it is a native protein.