character: Calcium
topic: Calcium's Role in Bone Health and Growth
grade: 11
subject: Biology
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character: Vitamin D
topic: Interaction with Calcium for Bone Strength
grade: 11
subject: Biology
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character: Osteoblasts
topic: Cells Involved in Bone Formation
grade: 11
subject: Biology
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character: Osteoporosis
topic: Effects of Calcium Deficiency on Bone Density
grade: 11
subject: Biology
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