The correct answer is bone-osteoblast pair.
There are three primary cell types of bone tissue:
• Osteoblasts- immature bone cells which produce protein mixture (osteoid)
• Osteocytes-mature bone cells that originate from osteoblasts with the functio in bone formation, maintenance of matrix and homeostasis of Calcium
• Osteclasts- multinucleated cells with the function in bone resorption and remodelling.