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cartilage model made Chondrocytes proliferate rapidly and secrete an extracellular matrix to form the cartilage model for bone

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Chondrocytes proliferate rapidly and secrete an extracellular matrix to form the cartilage model for bone

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bone begins to form in mid-physicists area and forms bone collar

# data[].attributes.wish_content.attachment_props.alternative_text
Chondrocytes proliferate rapidly and secrete an extracellular matrix to form the cartilage model for bone

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ossification center is made

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cartilage degenerates in the epiphyses

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 cartilage degenerates in the epiphyses 

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ossification continues, forms secondary center on bone ends

# data[].attributes.wish_content.attachment_props.alternative_text
ossification continues, forms secondary center on bone ends

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bone continues to replace cartilage from both directions

# data[].attributes.wish_content.attachment_props.alternative_text
bone continues to replace cartilage from both directions