Cycles of activity, monthly 197 



of 12-hour light and 12-hour darkness 179 8 



, single-day 1429 



, storage 622 



Cyclic AMP (adenosine 3', 5 ' -monophosphate) 622, 836, 837, 838, 2134, 2144, 2145 



-dependent 837 



-mediated 837 



groupings 134 



Cycloalkanes/cycloalkenes 1788 



Cyclopoid copepod 884 



Cyclopoida 882, 883 



Cyolotella 1252, 1561, 2021 



Cylindrotheaa 526 



Cys residues 396 



Cyst wall, non-cellular inner 328 



, outer 328, 332 



Cysteic acid 2140 

 Cysteine residues 396, 2087 

 Cystic fibrosis 852 

 Cystine 2140 

 Cystine/2 954 

 Cysts 320 



Cytochemical aspects 1333 

 studies 764 



Cytochemically 



595 







Cytochemistry 



1330, 1332, 



1334, 



2065 



Cytochrome oxidase 



activity 



853 





spectra 



130 







Cytochromes 1773 

 Cytokinetics 2204 

 Cytological damage 613 



effects 136, 1631, 1634 



investigation 2203 



study 860 



Cytology 1330, 1332, 1334 



Cytomembrane 9 35 



Cytopathologic effects 1628 



Cytophaga 1062 



Cytoplasm 327, 331, 598, 2065 



, apical 2211 



, vacuolated areas in 598 



Cytoskeleton 2178 



Cytosomes 602, 2106, 2124 



, dense 2124 



Cytotaxonomy 12 80 



672 



