310 



Pyrophosphate (Continued) 



plasticizing agent, 179, 259 



sperm model, 255, 259 



substrate, 179, 238 

 Pyruvate 



alanine conversion, 133-134 



dismutation, 91, 92, 289 



metabolism, 89-93, 133-134 



substrate, 62, 98, 91 

 Pyruvate-C 14 



substrate, 91, 92, 133, 134 



Q 10 , flagellar model, 256 



Rabbit sperm 



pH effect, 71 

 Ram sperm 



acetylcholinesterase, 246 



mitochondrial size, 112 



pH effect, 71 



respiration, 96 

 Randall, J. T., 112 

 Rat sperm 



antimyosin reaction, 182 



cholinesterase, 1 78 



enzyme localization, 185 



mitochondrial size, 1 12 



motility, 177, 286 



reaction with muscle actin, 184 



ultrastructure, 151, 153, 166 

 Redenz, E., 76 

 Reith, E. J., 246 



Relaxation phase, 172, 181, 221, 234. 

 236,238,245,254,258,261,264, 

 265, 280, 281 

 Relaxing factor, 178, 234, 265, 279- 

 282" 



isolation from sperm, 261 



sperm models, effect on, 259-261 

 Rephosphorylation, 18, 59, 60, 97. 

 99, 130, 173, 255, 270; see also 

 Oxidative phosphorylation 

 Research Institute for Animal Hus- 

 bandry, Utrecht, 31, 53 



Respiration; see also Metabolism; 

 Oxidative phosphorylation 

 acetate, effect of, 90 

 Amytal, effect of, 109, 115, 116, 



121, 123, 126, 129 

 antimycin A, effect of, 106-108, 



114, 115, 126 

 azide, effect of, 116-119, 121, 123, 



129 

 carbon dioxide, effect of, 72, 76. 



81-82, 290 

 dinitrophenol, effect of, 59 

 endogenous substrates, 60, 62, 94, 



95," 172, 280 

 lactate, effect of, 102, 1 14 

 osmotic pressure, effect of, 69 

 oxygen consumption, 62, 66-68, 



74, 89, 93, 96, 101 

 pH, effect of, 71,72, 74 

 phosphate, effect of, 67, 68, 290 

 potassium, effect of, 67, 74, 290 

 respiratory enzymes, 99-101, 109- 



128, 288-289 

 succinate, effect of, 114 

 Reticulopodia, 227 

 Reynolds number, 137, 139, 141, 143 

 Rheotaxis, 20-22 

 Rikmenspoel, R., 14, 19, 31, 101, 



148, 285 

 Rinaldi, R. A., 220 

 Rockefeller Foundation, 59 

 Rooster sperm 



ultrastructure, 151 

 Rothschild, Lord, 8, 10, 13, 35, 51, 

 153, 166, 171-173, 178, 277, 

 285-288, 290, 292 

 Ruby, A., 252 

 Rudall, K. M., 228 



Salamander sperm 

 ultrastructure, 151 



Sarcoma 



cell model, 253 



