I have completed it but am puzzled as to the parsing of what I think is the solution to 27 across. I work it out as ectosarcs but the clue says "shocking way to treat curvature in bone cell parts." The defininition of ectosarcs does not relate to this clue but I cannot find anything else which will complete what I have viz E?T?S?R?S. Can anyone explain the parsing or give me a different answer?