And tiny bacteria will have trouble secreting the larger spidroin proteins.

而微小的细菌难以分泌出大的蛛丝蛋白。

Usually the glomerulus and mesangium help filter the blood to remove wastes while keeping larger proteins and cells—including red blood cells—from entering the urine.

通常肾小球和系膜细胞能滤过血液、去除废物，同时防止大分子蛋白和包括红细胞在内的细胞进入尿液。

The larger spaces between endothelial cells allows fluid, immune cells and large proteins like lactate dehydrogenase (LDH), which is found in all cells, to leak out of the capillaries.

血管内皮细胞之间的孔隙增大，使血浆、免疫细胞和更大的蛋白质，如广泛分布于全身细胞内的乳酸脱氢酶（LDH）渗出毛细血管。

And they use it for many things: Webs Trapping prey Egg casings Transport and more Silk genes have been difficult to characterize because they code for very large proteins with highly repetitive regions.

它们将它用于很多事情：蛛网 诱捕猎物 卵壳 运输和更多 丝绸基因很难表征，因为它们编码具有高度重复区域的非常大的蛋白质。

Between these tentacle-like projections are tiny gaps called filtration slits that act like a sieve allowing only small particles such as water, glucose and ionic salts to pass through while blocking large proteins and red blood cells.

在这些触手状的突出物之间有微小的缝隙，称为滤孔；像筛子一样只允许小分子物质如水、葡萄糖、盐等通过，而阻挡大分子蛋白质、红细胞等。