Alkylating agents are the oldest group of chemotherapeutics in use today. Originally derived from mustard gas used in World War I , there are now many types of alkylating agents in use.  They are so named because of their ability to alkylate many molecules, including proteins , RNA and DNA . This ability to bind covalently to DNA via their alkyl group is the primary cause for their anti-cancer effects.  DNA is made of two strands and the molecules may either bind twice to one strand of DNA (intrastrand crosslink) or may bind once to both strands (interstrand crosslink). If the cell tries to replicate crosslinked DNA during cell division , or tries to repair it, the DNA strands can break. This leads to a form of programmed cell death called apoptosis .   Alkylating agents will work at any point in the cell cycle and thus are known as cell cycle-independent drugs. For this reason the effect on the cell is dose dependent; the fraction of cells that die is directly proportional to the dose of drug. 
Hello. I’m curious what you mean that you still suffer from the clot you had years ago. It didn’t dissolve with the Nattokinase and Serrapeptace? Do you suffer from the medicine they had you on? This concerns me because I’m trying to decide if I should take the xarelto my doctor prescribed for the small clot I got from a vein surgery I recently had or if I should stay on the Nattokinase and Serrapeptace I started two days ago. I felt nauseous and scared this morning because my dr told me I’ll be fine as long as I take xarelto. I also might have taken too much. 3times yesterday and also Vit. E, fish oil and aspirin. I might have overdone it. Your opinion would be appreciated.