C4(redirected from C4 (disambiguation))
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A category of cytology interpretation which corresponds to “suspicious of malignancy”, based on the NHSBSP (UK) guidelines for cytology reporting of aspiration cytology of breast lesions.
A plastic explosive which is one-third more powerful by weight than TNT. When C4 is detonated, the explosive is converted into gas which creates a pressure (shock) wave that demolishes the target by cutting, breaching or cratering.
complement deficiencyA state in which any of the complement proteins is subnormal
Complement deficiencies–associated disorders
C1r SLE, renal disease, repeated infections
C2 SLE, vasculitis, membranoproliferative glomerulonephritis, dermatomyositis
C3 Repeated infections
C5 SLE, gonococcal disease
C6 Relapsing meningococcal meningitis, gonococcal infection
C7 Raynaud's disease, chronic renal disease, gonococcal infection
C8 SLE, gonococcal infection