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Ordination analysis of sub-gingival and salivary samples obtained from healthy control subjects and children with Spondyloarthritis. A negative control (blank) is included as well. The shape of the dot indicates the habitat (circle, blank specimen; triangle, plaque; square, saliva), while the color of the specimen indicates the subject group (blue, blank specimen; green, Spondyloarthritis; red, Healthy controls).
