394 



INDEX 



Morphogenesis 



enzymes and, 333 

 Morrill, J. B., 29, 31, 149, 163 

 Mosaics 



eggs, 265, 330 



genetic, 181, 194 

 Moscona, A., 366 

 Moser, F., 91, 268 

 Moser, H., 191 

 Moss sperm, 26, 84, 85 

 Motomma, I., 40, 51, 52, 54, 91, 268 

 Mountain, I. M., 357 

 Mouse, 76, 82, 84, 88, 116, 120, 



124; see also Hamster; Rats 

 Mudd, S., 365 

 Muller, H. J., 207 

 Murphree, R. L., 79 

 Murphy, J. B., 353, 369 

 Muscle fibers, 311 

 Myosin, 304 



detection in chick blastoderms, 

 348 

 Myosin antigen, 300 

 Mytilus, 89 



Mi/tilus californumus, 58 

 Mytilus edulis, 56, 58, 136, 139, 145 

 Myzostoma 



mitochondria in eggs, 332 



Nace, G. W., 2 345-348, 355, 356 

 Nadi reaction, 325, 330 

 Nalbandov, A. V., 80 

 Nanney, D. L., 183 

 NaSCN 



effects of, 291 



explants treated with, 295 

 Nath, v., 264 

 Neal, W., 76 

 Needham, A. E., 202 

 Needham, J., 203, 349 

 Nelsen, O. E., 2, 238 

 Nereis, 139, 142, 163 



mitochondria in eggs, 332 

 Nereis limhata, 24, 27, 31, 41, 49, 



149 

 Nettleship, A., 356 

 Nieuwkoop, P. D., 297 

 Nigon, v., 264 



Nile blue sulfate, 274 

 Nilsson, A., 83, 126 

 Norman, A., 192 

 Notochord 



action of different agents on, 308 



NaSCN effect on, 292, 301 

 Novikoff, A. B., 41, 204, 264 

 Noyes, R. W., 84 



Nucleic acid, 191, 193, 195; see also 

 Deoxyribose nucleic acid; Ribo- 

 nucleic acid 

 Nucleolus, 5 



chemical properties, 10 



duplicating machine and, 18 



isolation of, 6 



and mammalian pronuclei, 121 



organizer region, 16 



RNA in, 6-15 



ultraviolet absorption of, 7 

 Nucleoprotein, 191, 193, 195 

 Nucleoside phosphorylase, 17 

 Nucleus 



and cytoplasm, 175-195, 216 



in determinate development, 188- 

 193 



differentiation, 203-208 



feulgen-negative, 188 



irradiation of, 189-194, 217 



synthesis in absence of, 17 



transplantation, 208-221 

 Nungester, W. J., 357 

 Nurse cells, 3, 264 



incorporation into eggs, 178 



Odor, D. L., 78, 87, 118, 119, 122, 



124 

 Oettle, A. G., 80 

 O'Melveny, K., 52, 55 

 Oocyte 



DNA in, 3 



effect of surrounding cells on, 2 



growth, 5 



nuclear changes, 3 



RNA in, 4, 8 



role of nucleoli, in, 4 



size relationships, 5 



starfish, 5 



