CD8A and hypersensitivity pneumonitis: Analysis of peripheral blood showed no significant differences regarding the median percentages of NK cells (sarcoidosis: 12.9%; HP: 14.9%; other DLD: 12.4%; p = 0.758), NKT cells (sarcoidosis: 4.0%; HP: 3.4%; other DLD: 2.6%; p = 0.088) and CD8+ cells (sarcoidosis: 29.8%; HP: 36.5%; other DLD: 28.0%; p = 0.297) between the different DLD.