Volkheimer G
Pathologe. 1993 Sep;14(5):247-52.
Solid, hard microparticles, such as starch granules, pollen, cellulose particles, fibres and crystals, whose diameters are well into the micrometre range, are incorporated regularly and in considerable numbers from the digestive tract. Motor factors play an important part in the paracellular penetration of the epithelial cell layer. From the subepithelial region the microparticles are transported away via lymph and blood vessels. They can be detected in body fluids using simple methods: only a few minutes after oral administration they can be found in the peripheral blood-stream. We observed their passage into urine, bile, cerebrospinal fluid, the alveolar lumen, the peritoneal cavity, breast milk, and transplacentally into the fetal blood-stream. Since persorbed microparticles can embolise small vessels, this touches on microangiological problems, especially in the region of the CNS. The long-term deposit of embolising microparticles which consist of potential allergens or contaminants, or which are carriers of contaminants, is of immunological and environmental-technical importance. Numerous ready-made foodstuffs contain large quantities of microparticles capable of persorption.
固态的硬微粒，如淀粉颗粒、花粉、纤维素颗粒、纤维和晶体，其直径达微米范围，大量且规律地从消化道进入体内。动力因素在上皮细胞层的细胞旁渗透中起重要作用。微粒从上皮下区域经淋巴管和血管运走。使用简单方法就能在体液中检测到它们：口服后几分钟就能在周围血流中发现。我们观察到它们进入尿液、胆汁、脑脊液、肺泡腔、腹腔、母乳，并经胎盘进入胎儿血流。由于被吸收的微粒会栓塞小血管，这涉及微血管问题，尤其是在中枢神经系统区域。由潜在过敏原或污染物组成或携带污染物的栓塞性微粒的长期沉积具有免疫学和环境技术重要性。许多现成食品含有大量能够被吸收的微粒。
