In fact , it is a long-standing paradox that hard tissues such as bone calcify , whereas soft tissues do not even though both tissues are fed by the same extracellular fluid .
The cells proliferate and secrete extracellular matrix proteins , which are the proteins in your tissues that give your tissues strength .
细胞增殖并分泌细胞外基质蛋白就是那些组织中给组织提供强度的蛋白质。
A molecule ( usually a protein ) that spans a cell membrane and " receives " extracellular signals and transmits them into the cell .
横跨细胞膜的分子(通常是蛋白质),接受细胞外信号并传导入细胞内。
Cancers express particular enzymes that they use to cut through the extracellular matrix to be invasive .
癌症表达特异蛋白酶,通过它穿过细胞外基质,从而进行浸润。
This enables the cell to capture material from the extracellular environment and to respond to cues detected by externally oriented receptors .
这就使细胞能从细胞外的环境中捕获原料,并且回应那些能被外部指向型受体接收的信息。
To obtain single cells for tissue engineering , researchers have to first break tissue apart , using enzymes that digest the extracellular material that normally holds cells together .