Complex sentence: Studies show that the alkaline phosphatase protein found in cancer cells has similar characteristics to that found in non-malignant body tissues and that the protein originates from the same gene in both the malignant and the non-malignant cells.
Split into simpler sentences: Studies show that the alkaline phosphatase protein found in cancer cells has similar characteristics to that found in non-malignant body tissues. Results show that the protein has originated from the same gene in both the malignant and the non-malignant cells.