Then,a hard cast may be put around the area of the break to hold the bone in place while it heals.

VOA: special.2009.02.04

All these cells come from the bone marrow and biologists have traced the formation of these cells in great detail.

所有这些细胞都来自骨髓,而生物学家已经很详细地,研究了这些细胞的形成过程

耶鲁公开课 - 生物医学工程探索课程节选

We'll talk in a minute about stem cells that are involved in generation of blood and they develop and they live in the bone marrow.

我们一会儿要说到,和血细胞再生有关的干细胞,它们发育并储存在骨髓中

耶鲁公开课 - 生物医学工程探索课程节选

First of all, at 16 years old you are in the midst of an important period for growth and bone development, and losing weight too quickly (more than 1-2 pounds per week), could result in bone loss which could affect bone density in adulthood.

CNN: Is it possible to lose 15 pounds in one month?

An infection in the bone could lead to potential issues with bone healing, along with possible spread of infection throughout the body as well.

FORBES: Kevin Ware's 'Gruesome' Injury

This, in turn, limits a person's peak bone mass in adulthood, making osteoporosis a greater threat when bone density starts to decline late in life.

FORBES: DeCode Discovers Osteoporosis Gene