crossword puzzle
 1 Common carbohydrate 4 Egg-laying 9 Thought spot 10 Soft tissue scan, for short 11 Compound that smells like rotten eggs 12 Windpipe flap 13 Kind of radical 15 They're lost in childhood 17 Result of chemically combining elements 18 Slide type 22 Skullcap? 26 Emit coherent light 27 Having only one of a pair of genes 30 It helps with the daily grind 31 Kind of cholesterol: abbr. 32 Peptide binding site 33 Interspecies tissue transplant 34 Solution strength DOWN
 1 Experimentee 2 Nucleotide base 3 Kidney-related 4 Pertaining to transmembrane diffusion 5 Element used in watch bearings 6 Pituitary gland secretion 7 Greek's 15th 8 Worn-out red blood cell destroyer 14 Pubis lead-in 16 Similar, at the start 19 Letter used in calculus 20 Anatomical discharge canal 21 CAT or GAG, e.g. 23 Contracting muscle opposed by another muscle 24 Father of modern bacteriology 25 Ecological succession...

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