From Minecraft Wiki. The purpose of an enderman trap (popularly called Ender Ender) is for the easy access and killing of endermen. It is possible for the user to create such a trap that can be used by simply standing still, and looking at the endermen. This angers any you look at, luring them into the trap.he purpose of an enderman trap (popularly called Ender Ender) is for the easy access and killing of endermen. It is possible for the user to create such a trap that can be used by simply standing still, and looking at the endermen. This angers any you look at, luring them into the trap.
Causes of Cross-Contamination - how it happens (continued): â¢Processing excessive number of specimens in one batch due to staff shortages may lead to breakdown in protocol adherence and introduce potential error for cross-contamination.
In genetics, crosslinking of DNA occurs when various exogenous or endogenous agents react with two different positions in the DNA. This can either occur in the same strand (intrastrand crosslink) or in the opposite strands of the DNA (interstrand crosslink). Crosslinks also occur between DNA and protein.DNA replication is blocked by crosslinks, which causes replication arrest and cell death if the crosslink is not repaired.The RAD51 family plays a role in repair. The crosslinking reaction by Psoralens targets TA sequences intercalating in DNA and linking one base of the DNA with the one below it. 2  Psoralen adducts cause replication arrest and is used in the treatment of psoriasis and vitiligo.