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Bone formation, or ossification, begins around the sixth to seventh week of embryonic development. Most bones develop from a cartilaginous template through the process of endochondral ossification. Cartilage formation begins when clusters of mesenchymal cells differentiate into chondrocytes. These chondrocytes proliferate rapidly and secrete an extracellular matrix that becomes encased in a membrane called the perichondrium. The resulting cartilage model provides a template that resembles the...
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Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
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The thorax muscles are central to the body's respiration and provide essential support and movement for the upper body. They are intricately designed to facilitate the complex breathing process while also contributing to the structural integrity and mobility of the chest and upper limbs.
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Related Experiment Video

Updated: Jan 1, 2026

Isolation of Chondrocytes and Chondroprogenitors Using Fibronectin Adhesion and Migratory Assay
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Correction to: It's time to recognize the perichondrium.

Tal Laor1, Diego Jaramillo2

  • 1Department of Radiology, Boston Children's Hospital, 300 Longwood Ave, Boston, MA, 02115, USA. tal.laor@childrens.harvard.edu.

Pediatric Radiology
|December 25, 2019
PubMed
Summary
This summary is machine-generated.

This article provides corrected versions of Table 1 and the legend for Fig. 10, rectifying previous typesetting errors. The updated information ensures accuracy for readers referencing these specific elements.

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Area of Science:

  • Scientific Publishing
  • Academic Integrity

Context:

  • Original publication contained errors in Table 1 and Fig. 10 legend.
  • Ensuring data accuracy and reliable scientific communication.

Purpose:

  • To provide corrected versions of Table 1 and the legend for Fig. 10.
  • To rectify typesetting errors and maintain the integrity of the published record.

Summary:

  • The article presents corrected versions of Table 1 and the legend for Fig. 10.
  • These corrections address previously identified typesetting errors.

Impact:

  • Enhances the reliability and accuracy of the scientific record.
  • Facilitates correct interpretation of data and figures by researchers.