White blood cells help your body fight infections.

白血球帮助你的身体抵抗感染。

Vitamin A helps make white blood cells, key in the body's defense, helps shape bones and improves vision by keeping the cells of the eye in check.

维他命A有助于白血球的形成，它们是身体防御的关键，帮助骨骼塑形并通过控制眼球细胞来提高视力。

This would be like comparing the size of a human red blood cell to the entire island of Sicily; an incredible difference in scale that's difficult to really wrap your head around.

这就好比把一个人类红血球的小与整个西西里岛的小进行比较；规模相差悬殊，难以让人真正理解。

We only exist as the blood corpuscles that course through its arteries, and if it could work without us, it would let us die.

我们存在着，只不过像流过它的动的一些血球，要是它没有我们也能工作的话，它就会让我们死掉。

So is the microscopic examination for blood corpuscles. The latter is valueless if the stains are a few hours old.

用显微镜检验血球的方法也同样不好。如果血迹已干了几个钟头以后，再用显微镜来检验就不起作用了。

There are different kinds of white blood cells, right?

白血球有不同的种类，对吧？

It will enhance white cell activity, reduce the inflammation.

它会增高白血球的活性降低炎症。

In other words, you were either born with the Rh factors on your red blood cells, like most people, or you were born without them, which is more rare, but significant as we will learn in this lesson.

换言之，你或者像人一样，天生就有红血球中的Rh因子，或者天生就没有Rh因子，这是比较罕见的，但正如我们在这节课中所到的，这是很重要的。

And so if you have sickle cell anemia, this would be a regular red blood cell like that.

所以，如果你患有镰状细胞贫血，这就会是一个正常的红血球的样子。

This is something that you want to have as a transplant patient, because white blood cells can and will infiltrate, replicate en masse, and destroy your new organ when unchecked.

在器官移植病人体内，这是我们所乐见的，因为如果没有阻止，白血球会进入移植的器官组织中量复制，攻击消灭外来的组织。

Beyond nerves and mood, consider your bloodwork results coming back looking like someone turned down the volume on red blood cells—that's anemia for you when lacking B12.

除了神經和情緒，考慮一下你的血液檢查結果，看起來就像有人把紅血球的音量調低了——這就是缺乏 B12 時的貧血。

SCID, who lacked the enzyme adenosine deaminase, or ADA, required to make infection-fighting white blood cells.

SCID，即严重联合免疫缺陷病，患者缺乏制造抗感染的白血球所需的腺苷脱氨酶（ADA）这种酶。

Kid's gonna be dead in a matter of days if we don't figure out why his red blood cells are disintegrating, so...

孩子可能几天之内就会死...如果我们找不到他的红血球不断破裂的原因。

A lymphocyte, being a subtype of white blood cell, a main component of your immune system.

淋巴细胞(lymphocyte)属于白血球的其中一种，是免疫系统中最主要的成分之一。