crossword puzzle
ACROSS
 1 Java Man, taxonomically 9 Class of leeches 10 Double-helix codiscoverer 11 Sort of sample 12 Kneecap 14 Eli ____ 15 Dendrite's opposite 16 What nociceptors detect 19 Tree hugger? 20 Some prefix 21 Intestinal bacterium 24 Experimental result 26 Its atomic number is 55 28 Bonded structure 29 Doctor 30 Like some injections DOWN
 1 Type of group in an alcohol 2 It carries the code to the cytoplasm: abbr. 3 Green org. 4 Act as a stimulus 5 Experimental treatment 6 1991 Nobelist who invented patch clamping 7 Not superimposable on its mirror image 8 Like sand and sugar 12 It weighs about one dalton 13 Pines, ponds, pandas, etc. 17 Asexual reproduction of plants 18 Science started by a monk 19 The two main trachea branches 22 Protected from a disease 23 Pupil's covering 25 Character variant 27 The beginning of a cell? 29 Nonpolar amino...

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