Now and again, it needs a good laugh during a tedious work. Here are two funny typos.
RNA spicing (For Non-Experts: you can splice RNA which consists of two strands into the single strands)
secretary cell (For Non-Experts: it should be secretory, a cell that secretes, e.g., hormones)
You will find the latter one with some googits, but it is nonetheless a typo. But I like the thought of someone at a desk helping enzymes and proteins with the work.