Analysis of 40 spinal marrow samples, 20 of which belonged to Alzheimer’s patients, has identified six proteins in spinal fluid that can be used as markers for Alzheimer's. The analysis focused on 35 proteins that are associated with the lysosomal network — involved in cleaning and recycling beta amyloid. None of the six proteins had previously been linked to Alzheimer’s.
 Lysosomal Network Proteins as Potential Novel CSF Biomarkers for Alzheimer’s Disease. NeuroMolecular Medicine. 16(1), 150 - 160.(2014).