Stalling arthritic pain with probiotics: Probiotic Lactobacillus acidophilus increases IL-9 levels, augments proliferation of ILC2s (type 2 innate lymphoid cells) and regulatory T (Treg) cells, promotes resolution of inflammation, attenuates cartilage destruction, decreases bone loss, and inhibits pathological features associated with arthritis via up-regulation of its target genes, 22/October/2018, 10.35 pm