Nuclear fuel cycle. The nuclear fuel cycle, also called nuclear fuel chain, is the progression of nuclear fuel through a series of differing stages.
Hormone responsiveness does appear if the osteoclasts are cultured in conditioned medium from osteoblasts that first have been exposed to PTH, suggesting an important role for osteoblasts in PTH-dependent bone resorption [citing references as early as 1986].
What are the functions of PTH (parathyroid hormone-parathormone) regulates calcium & phosphorus blood levels; promotes bone demineralization & increases intestinal absorption of Ca2+; increases serum Ca2+ levels.