If one doesn’t have a sense of humor in science, its really dull and frustrating. So, here unequivocally is an SP-D multimer made as pysanky easter egg in the 1980s sometime by one of my son’s.  Just had to laugh at this multimer repleat with carbohydrate recognition domains (about 12 of them – so very much in line with the concept that SP-D multimers are made up of dodecamers), and also visible is the N termini conjunction in the center.  Just had to post, how funny to me. If one doesn’t care that the first peak on either side of the N termini is a little bit too far from the center, one could just say, and there are those glycosylation sites he put in as well.

Ways to measure segmented lines are varied. Here are two which produce nearly identical results. 1: break nodes, rotate to horizontal and 2: use the parallel dimension tool (in CorelDRAW).  Using both, either, was very very close, therefore the method (1) which is easiest to document visually is the one i will (have) used will continue to be the preferred method for measuring the length of SP-D hexamer-arms.