A chalazion is caused by the oil in the gland becoming too thick to flow out of the gland or the opening of the gland being obstructed. Without anywhere to go, the oil builds up inside the gland and forms a lump in the eyelid.ach of the oil glands, called meibomian glands, produces oil that flows out of the gland into the tears. The oil exits from each gland through a tiny circular opening just behind the eyelashes of the upper and lower lids of both eyes.
Transcription activator-like effector nucleases (TALENs) are artificial restriction enzymes generated by fusing a TAL effector DNA-binding domain to a DNA cleavage domain.Restriction enzymes are enzymes that cut DNA strands at a specific sequence.rom Wikipedia, the free encyclopedia. Transcription activator-like effector nucleases (TALENs) are artificial restriction enzymes generated by fusing a TAL effector DNA-binding domain to a DNA cleavage domain. Restriction enzymes are enzymes that cut DNA strands at a specific sequence.
DNA polymerase is the enzyme responsible for adding the daughter nucleotides to the parent DNA strand. In order to help it get started in its process, an RNA primer is built upon the parent strand at the base of the replication fork.The enzyme responsible for building that RNA primer is RNA primase.NA polymerase is the enzyme responsible for adding the daughter nucleotides to the parent DNA strand. In order to help it get started in its process, an RNA primer is built upon the parent strand at the base of the replication fork.