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Splenocyte IFNγ co-culture ELISpot responses to infected CKC. Splenocytes from infected birds (INF, n = 4) sacrificed 2 weeks after challenge and control non-infected birds (non-INF, n = 3) were cultured with infected chicken kidney cells (CKCINF). Results expressed as mean (± S.E.M.) of spot forming units (SFU) per million cells. Significance of the data is represented as follows: * = p < 0.05, ** = p < 0.01. SFU: spot forming units.
