- CDA
- CDC25
- CDC25A
- CDC25B
- CDC25C
- CDC37
- CDC6
- CDCP1
- CDH2
- CDK-activating kinase
- CDK1
- CDK12
- CDK2
- CDK3
- CDK4
- CDK5
- CDK5RAP2
- CDK6
- CDK7
- CDK8
- CDK9
- CDKL5
- CDKN1B
- CDKN2BAS
- CDKN2C
- CDP-choline pathway
- CDX1
- CDX2
- CDX4
- CDx
- CEACAM3
- CEACAM5
- CEBPA
- CEBPD
- CEBPE
- CEBPG
- CEN 1789
- CEP152
- CEP290
- CEP63
- CEREC
- CETP inhibitors
- CFCS
- CFP-10
- CFU-E
- CFU-GEMM
- CFU-GM
- CGMP-dependent protein kinase
- CGRP
- CH50
- CHA2DS2-VASc score
- CHADS2 score
- CHARGE syndrome
- CHCHD10
- CHEK1
- CHEK2
- CHIR99021
- CHN1
- CHOP
- CHRNA1
- CHRNE
- CHRNG
- CIITA
- CJD
- CK-MB
- CKLF
- CKS1B
- CL
- CLARITY
- CLCN1
- CLCN2
- CLCN3
- CLCN5
- CLCN7
- CLIC1
- CLIC2
- CLIC4
- CLIC5
- CLIC6
- CLN3
- CLOVES syndrome
- CLP Regulation
- CMKLR1
- CML
- CMP
- CMR
- CMV
- CNGA3
- CNGb3
- CNQX
- CODA
- COL4A5
- COMP
- COP1
- COPD
- COPD exacerbation
- COPII
- COSTART
- COUP-TFII
- COVAX