Clinical Laboratory Scientist 
Commission on Life Sciences 
cafe-au-lait spots 
capillary leak syndrome 
Capillary leakage syndrome 
capillary-like structures 
cardinal ligaments 
cathepsin-like substance 
cationic liposomes 
Challenger Lifetime Subscription 
clearances 
Clinical Laboratory Specialist 
Closed-loop stimulation 
cloverleaf skull 
coffin lowry syndrome 
Coffin-Lowry syndrome 
complement lysis sensitivity 
conditioned lick suppression 
confidence intervals 
confidence limits 
confocal laser scanning 
constrained least-squares 
contact lenses 
Cornelia de Lange syndrome 
Critical Limits 
cross-links 
cutaneous lymphomas 
cycle lengths 
cytotoxic lymphocytes