CBLN1 and Alzheimer disease: The ratios of Cer [NP]/[NS], Cer [NH]/[NS], Cer [NP]/[AS], Cer [NH]/[AS], Cer [NDS]/[AS], Cer [AH]/[AS] and Cer [EOP]/[AS] were significantly different between non-lesional skin of AD patients and healthy control subjects as well as Pso patients (Fig. 1).