CD8A and hereditary sensory and autonomic neuropathy: CD4/CD8 staining in 19 samples revealed that the infiltrating lymphocytes were mainly CD8+ T cells.14 Naidoo et al. 12 reported the pathological patterns of 11 patients with CIP (eight patients with bronchoscopy lung biopsy, two patients with percutaneous lung puncture, and one patient with wedge resection).