The prima-linked cholinesterase tetramers are assembled from homodimers; hybrid molecules composed of acetylcholinesterase and butyrylcholinesterase dimers are up-regulated during development of chicken brain â€” The PRiMA-linked Cholinesterase Tetramers Are Assembled from Homodimers â€” PRiMA-linked AChE-BChE Hybrid Oligomers â€” Supplemental Data â€” JBC