- NK1 receptor antagonist
- NKG2
- NKP46
- NKT cells
- NKX2-1
- NKX2-2
- NKX2-5
- NLRC4
- NLRP1
- NLRP10
- NLRP12
- NLRP2
- NLRP4
- NLRP6
- NLRP7
- NLRX1
- NMDA
- NMDA receptor
- NMDA receptor antagonists
- NMDA receptors
- NMR
- NMR tubes
- NNK
- NOAEL
- NOD mice
- NOD1
- NOD2
- NOE
- NOS1
- NOTES
- NOX2
- NP-40
- NPAS2
- NPH insulin
- NPI
- NPM1
- NPR1
- NPR2
- NR4A
- NR4A1
- NR4A2
- NR4A3
- NR5A1
- NRF1
- NRIP1
- NRL
- NRON
- NRT
- NS5B inhibitors
- NSAIDs
- NSP1
- NSP2
- NSP4
- NSP5
- NSP6
- NT-4
- NT5C1A
- NTU
- NUP98
- Na k cl cotransporter
- Na-k-cl cotransporter
- Na/K ATPase
- Nabilone
- Nabiximols
- Nabumetone
- Nacre
- Nadolol
- Nadroparin calcium
- Naegleria fowleri
- Nafcillin
- Naftifine
- Naftopidil
- Nager syndrome
- Nail bed
- Nail biting
- Nail dystrophy
- Nail plate
- Nail psoriasis
- Nail-patella syndrome
- Naive T cells
- Naked DNA
- Naked eye
- Nalbuphine
- Naldemedine
- Nalfurafine
- Nalidixic acid
- Nalmefene
- Nalorphine
- Naloxegol
- Naloxonazine
- Naloxone
- Naltrexone
- Naltrindole
- Nampt
- Nance-Horan syndrome
- Nandrolone
- Nandrolone decanoate
- Nanobacterium
- Nanobiotechnology
- Nanobody