226 



The Biochemistry of Semen 



Carbon monoxide, effect on sperm, 

 73, 91-2; reaction with cyto- 

 chrome oxidase, 91 



Carotenoids, associated with 

 gametes and reproduction, 72-3 



Carp sperm, 104, 106, 181 



Castration effects, 113, 119, 139- 

 45, 186 



Cat, 21; lipid bodies, 131 



Catalase, 92-3 



Centrifugation, effect on sperm, 83 



Centriole, 14 



Centrosome, 13 



Cephalin, 124, 130 



Cervical mucus, penetration test, 

 40; as medium for sperm, 40, 54 



Cetyldimethylbenzylammonium 

 chloride, effect on sperm, 57 



Cetyltrimethylammonium bromide, 

 (CTAB), spermicidal properties, 

 50, 57; effect on succinate oxida- 

 tion, 50 



Charcot-Leyden crystals, 161 



Chemotaxis, 71-2 



Chiroptera, copulatory plug, 28 



Chloride, 18,21,23,32-3, 191 



Chloroform, effect on sperm, 54 



Cholesterol, 86, 124-5, 130-2 



Choline, 119, 130, 168-74 



Choline esterase, 173^ 



Chromatin, in sperm nucleus, 11, 

 59,98 



Chromosin, 109 



Chromosomin, 109 



Citraconic acid and chemotaxis, 72 



Citric acid, in semen and reproduc- 

 tive organs, 16-24, 31-3, 132, 

 183-8, 191; relation to andro- 

 gens, 68, 139, 186; metabolism 

 and function, 187-8; association 

 with gel, 31, 34, 184, 188; in 

 diluents, 81; in prostatic calculi, 

 132 



Citric acid test, for androgens, 68, 

 186 



Clam, nucleoprotein, 100 



Clotting, of semen, 28-9, 114, 188 

 Clotting test, for androgens, 67 

 Clupeine, 106-8 

 Coagulating gland in rat, 16, 29; 



fructose secretion, 16, 138^5; 



transplantation, 144 

 Coagulation of semen, 28-9, 114, 



188 

 Cock semen {see also fowl), volume 



and density, 2; sperm structure, 



11; composition, 33; pH, 44, 60; 



respiration, 50; irradiation effect, 



59; diluents, 79-81; nucleic acid, 



105; lipid capsule, 126; sugar, 137 

 Cod-fish, gadushistone, 108; lipids, 



124 

 Coelenterate, sperm nucleic acid, 



104 

 Cold effect on sperm, 62-6 

 Colostrum corpuscles, 131-2 

 Colour {see also pigments), 1, 17, 



22 

 Conception rate, and quality of 



semen, 39, 42 

 Contraception {see also spermicidal 



substances), 55-8, 79-80, 97-8 

 Contractive substances, in sperm, 



14; in seminal plasma, 27 

 Copper, 88-9; toxicity, 54, 58, 76 

 Copulatory plug, 28-9 

 Corpora amylacea, 131-3 

 Cortical helix, 15 

 Cowper's gland, 15, 35, 185 

 Cozymase, in sperm, 157-8; dephos- 



phorylation, 122 

 Creatine, 179-81 

 Creatinine, 179-81 

 Crocetin, dimethyl esters, in Chlamy- 



domonas, 72 

 Crocin, in Chlamydomonas, 72 

 Crustaceans, nucleic acid, 104 

 Cryptorchidism, 62 

 Cumulus-dispersing factor, and 



hyaluronidase, 96 

 Cyanide, effect on sperm, 55, 56, 91, 



151 



