- Chiral drugs
- Chiral resolution
- Chirality
- Chiropractic
- Chiropractic manipulation
- Chiropractors
- Chitin
- Chitin synthase
- Chitinase
- Chitobiose
- Chitosan
- Chitosanase
- Chives
- Chlamydia
- Chlamydia antibodies
- Chlamydia infection
- Chlamydia pneumoniae
- Chlamydia psittaci
- Chlamydia trachomatis
- Chlamydiaceae
- Chlamydial pneumonia
- Chlamydiales
- Chlamydophila
- Chlamydophila pneumoniae
- Chlamydophila psittaci
- Chlamydospores
- Chloasma
- Chloracne
- Chloral
- Chloral hydrate
- Chlorambucil
- Chloramine
- Chloramine-T
- Chloramine-t
- Chloramphenicol
- Chloramphenicol acetyltransferase
- Chloramphenicol resistance
- Chlordane
- Chlordecone
- Chlordiazepoxide
- Chlorella
- Chlorella vulgaris
- Chlorfenapyr
- Chlorhexidine
- Chlorhexidine gluconate
- Chloride
- Chloride channel blocker
- Chloride channels
- Chloride ion
- Chloride shift
- Chlorides
- Chlorin
- Chlorinated hydrocarbons
- Chlorination
- Chlorine compounds
- Chlorine dioxide
- Chlorisondamine
- Chlormadinone
- Chlormadinone acetate
- Chlormequat
- Chlormethine
- Chlormezanone
- Chloroacetaldehyde
- Chloroacetamide
- Chloroacetic acid
- Chloroacetyl chloride
- Chloroauric acid
- Chlorobi
- Chlorobutanol
- Chloroethane
- Chlorofluorocarbons
- Chlorogenic acid
- Chloroma
- Chloromethyl methyl ether
- Chlorophenol
- Chlorophenoxy herbicides
- Chlorophyll
- Chlorophyll a
- Chlorophyll b
- Chlorophyllase
- Chlorophyllin
- Chloropicrin
- Chloroplast DNA
- Chloroplasts
- Chloroprene
- Chloroprocaine
- Chloroquine
- Chlorosis
- Chlorothalonil
- Chlorothiazide
- Chlorotoxin
- Chloroxylenol
- Chlorphenamine
- Chlorpheniramine
- Chlorpheniramine maleate
- Chlorpromazine
- Chlorpropamide
- Chlorpropham
- Chlorprothixene
- Chlorpyrifos
- Chlortalidone
- Chlortetracycline
- Chlorthalidone
- Chlorzoxazone
- Choanal atresia
- Choice
- Choice reaction time
- Choice set
- Cholagogue
- Cholangiocarcinoma
- Cholangiocytes
- Cholangiography
- Cholangitis
- Cholecalciferol
- Cholecystectomy
- Cholecystitis
- Cholecystokinin
- Cholecystostomy
- Choledochal cyst
- Choledochocele
- Choledochoduodenostomy
- Choledochojejunostomy
- Choledocholithiasis
- Cholelithiasis
- Cholera
- Cholera toxin
- Cholera vaccine
- Choleretic
- Cholescintigraphy
- Cholestane
- Cholestanol
- Cholestasis
- Cholestatic hepatitis
- Cholestatic pruritus
- Cholesteatoma
- Cholesterol
- Cholesterol 24 hydroxylase
- Cholesterol 7 alpha hydroxylase
- Cholesterol 7 alpha-hydroxylase
- Cholesterol absorption inhibitors
- Cholesterol embolism
- Cholesterol ester
- Cholesterol ester storage disease
- Cholesterol ester transfer protein
- Cholesterol esters
- Cholesterol level
- Cholesterol sulfate
- Cholesterol synthesis
- Cholesterol-dependent cytolysin
- Cholesterolosis