Cancer is Made of Cells

Cancer cells

Johannes Muller, a German pathologist, published ¿ber den feineren Bau und die Formen der krankhaften Geschw¿lste (On the Nature and Structural Characteristics of Cancer, and of Those Morbid Growths Which May Be Confounded with It), which began to establish pathological histology as an independent branch of science. He demonstrated that cancer is made up of cells, although he thought that cancer cells arose from abnormal cells. He believed that cancer cells came from 'blastema' (the undifferentiated tissue from which it was believed that cells arose from) between normal tissues.12