They extend from the epithelial cells into the conducting zone.

它们由上皮细伸入传导区。

When the APC gene is mutated, the epithelial cells start to quickly divide forming polyps.

当APC基因突变时，上皮细开始快速增殖，形成息肉。

Alright, as a quick recap, esophageal cancer is the uncontrolled growth of esophageal epithelial cells.

得！快速回顾一下：食管癌指是食管上皮细不受控长。

The other way epithelial cells can necrose is via nephrotoxins, which are substances that tend to damage the epithelial tubular cells.

另一种上皮细坏死方式是由于肾毒素，这些质往往损坏肾小管上皮细。

The CPE specifically targets the tight junctions that connect epithelial cells lining the intestines to one another.

毒素（CPE）作用于肠上皮细紧密连接。

The virus initially enters respiratory epithelial cells - but eventually spreads to numerous cell types.

最初病毒会进入呼吸道上皮细，但最终会影响到各个类型细。

When cholera enterotoxin enters the epithelial cells, it leads to the ADP-ribosylation of the Gs alpha subunit of G-protein.

当霍乱肠毒素进入上皮细时，它会导致G蛋白Gs-α亚基ADP-核糖基化。

Now, one of the best studied receptors is the epithelial sodium channel, which, as you might guess, is specific to sodium.

研究得最深入受体一是上皮钠通道，正如你可能猜到，它只对钠起作用。

These guys can transform into ciliated columnar cells, so they help regenerate and replace damaged ciliated columnar epithelial cells if needed.

它们可以转化为纤毛柱状上皮细，必要时可以替代和修复受损纤毛柱状上皮细。

So, during ovulation, the follicle ruptures and releases the egg, which inadvertently leads to epithelial cell damage.

在排卵过程中，卵泡破裂，卵母细释出，也无意中导致了上皮细损伤。

Inside the stomach, the epithelial layer is made up of cylindrical cells, which dive into the lamina propria, forming pits.

在胃内，上皮层由柱状细组成，这些细深入固有层，形成凹坑。

Conversely, primitive hematopoietic stem cells were reported to give rise to muscle, liver, intestinal, pulmonary epithelial, and neuronal cells.

相反，据报道原始造血干细会产肌肉，肝脏，肠道，肺上皮和神经细。

Between the follicles is the stromal or connective tissue cells, and lining the ovary is a layer of epithelial cells.

卵泡质是基质细，也是结缔组织细，卵巢内侧排列着一层上皮细。

To fix that damage the epithelial cells have to undergo cell division to replace and heal the tissue.

为了修补损伤，上皮细需要进行细分裂，从而替代及治愈受损组织。

So, during ovulation the follicle ruptures and releases an egg which inadvertently leads to epithelial cell damage.

当卵泡破裂卵子被释放时，会导致上皮细损伤。

Once rhinovirus has been introduced to the respiratory mucosa, it targets cell surface receptors expressed at the surface of nasal epithelial cells.

一旦鼻病毒被进入呼吸道粘膜，它目标是在鼻上皮细表面表达细表面受体。

The epithelial cells can absorb these nutrients into the bloodstream, and from there they can go to various tissues around the body.

上皮细能将这些营养质吸收入血，再经血液循环将营养质运送至全身各种组织。

These cancer cells release a substance called mobility factor, which helps them break into and settle in between the squamous epithelial cells.

这些癌细可以释放一种叫做迁移因子质，可以使他们侵犯鳞状上皮细，并在其安家。

I myself, prefer to have my excess epithelial cells slough off naturally, but I don't condemn those who seek to accelerate the process.

我倒是宁愿表皮细自己慢慢脱落。但我也不责怪那些想加速这一进程人啊。

After a while, they can begin to show signs of cellular damage and the epithelial cells can possibly even die off.

一段时后，患者可能开始出现细损伤症状，上皮细甚至可能相继坏死。