In hostile environment, intense feeding occurs. At this time the lysosome wall ruptures and the enzymes come out. This enzyme destroys other small parts of the cell. This process is called autophagy. Thus all cells can be digested. This is called autolysis. Lysosomal nuclease enzymes (DNA-ase, RNA-ase) cause blood cancer and thyroxine hormone causes hepatitis and polynephritis. Lysosome enzymes cause about 20 types of congenital diseases or storage diseases. As a result, all cells can be destroyed. For these reasons, lysosomes are called suicidal sacs.