TNFRSF11B and osteoporosis: The keywords in the yellow clusters consist of osteoporosis, osteocyte, rat, histomorphometry, endoplasmic reticulum stress, angiogenesis, etc. The keywords in the blue clusters consist of melatonin, oxidative damage, osteoblast, reactive oxygen species, etc. The keywords in the green clusters consist of bone, bone remodeling, cytokines, osteoblastogenesis, osteoclastogenesis, osteoprotegerin, etc.