 <translate> Give some stream of consciousness and then the answer. The nephron (from Greek νεφρός -- nephros, meaning "kidney") is the microscopic structural and functional unit of the kidney. It is composed of a renal corpuscle and a renal tubule. The renal corpuscle consists of a tuft of capillaries called a glomerulus and an encompassing Bowman's capsule. The renal tubule extends from the capsule. The capsule and tubule are connected and are composed of epithelial cells with a lumen. A healthy adult has 0.8 to 1.5 million nephrons in each kidney. Blood is filtered as it passes through three layers: the endothelial cells of the capillary wall, its basement membrane, and between the foot processes of the podocytes of the lining of the capsule. The tubule has adjacent peritubular capillaries that run between the descending and ascending portions of the tubule. As the fluid from the capsule flows down into the tubule, it is processed by the epithelial cells lining the tubule: water is reabsorbed and substances are exchanged (some are added, others are removed); first with the interstitial fluid outside the tubules, and then into the plasma in the adjacent peritubular capillaries through the endothelial cells lining that capillary. This process regulates the volume of body fluid as well as levels of many body substances. At the end of the tubule, the remaining fluid -- urine -- exits: it is composed of water, metabolic waste, and toxins.

Answer this question: what is the microscopic unit of the kidney? <yor> Fi ìmọ̀lára rẹ hàn, kó o sì wá dáhùn ìbéèrè náà. Nephron (láti inú èdè Gíríìkì νεφρός - nephros, tó túmọ̀ sí "ẹ̀dọ̀") jẹ́ ẹ̀yà ara tí kò tó nǹkan tó ń ṣiṣẹ́ lára kíndìnrín. Ó ní corpuscle àti tubule inú kíndìnrín. Àwọn ohun tó para pọ̀ di ara ẹ̀dọ̀ inú kíndìnrín ni glomerulus àti Bowman's capsule. Àpọ́n inú kíndìnrín náà ti jáde láti inú àpò náà. Àpòòtọ́ àti tubule so pọ̀, àwọn sẹ́ẹ̀lì epithelial àti lumen ló sì wà nínú wọn. Àwọn nephrons tó wà nínú kíndìnrín kọ̀ọ̀kan tó mílíọ̀nù mẹ́jọ sí mílíọ̀nù kan àti ààbọ̀ ló wà nínú kíndìnrín àgbàlagbà kan tó ní ìlera tó dáa. Wọ́n máa ń yọ́ ẹ̀jẹ̀ tó bá ń gba inú ọ̀nà mẹ́ta kọjá, ìyẹn àwọn sẹ́ẹ̀lì endothelial tó wà lára ògiri òpó ẹ̀jẹ̀ náà, òpó ẹ̀jẹ̀ tó wà nísàlẹ̀ rẹ̀, àti àárín àwọn sẹ́ẹ̀lì tó wà lára àwọn podocytes tó wà lára òpó ẹ̀jẹ̀ náà. Àwọn ẹ̀yà ara tó wà ní ìsàlẹ̀ àti ìsàlẹ̀ tubule ni àwọn ẹ̀yà ara tó wà ní ìsàlẹ̀ àti ìsàlẹ̀ tubule. Bi omi lati inu kapusulu naa ṣe n ṣàn sọkalẹ sinu tubule, awọn sẹẹli epithelial ti o wa lori tubule naa ṣe ilana rẹ: omi ti tun gba ati awọn nkan ti wa ni paṣipaarọ (diẹ ninu wọn ni a fi kun, awọn miiran ni a yọ kuro); akọkọ pẹlu omi interstitial ni ita awọn tubules, ati lẹhinna sinu pilasima ni awọn capillaries peritubular ti o wa nitosi nipasẹ awọn sẹẹli endothelial ti o wa lori capillary yẹn. Ìgbésẹ̀ yìí ló máa ń darí bí omi inú ara ṣe ń pọ̀ tó àti bí ọ̀pọ̀ èròjà inú ara ṣe ń pọ̀ tó. Ní òpin tubule, omi tó ṣẹ́ kù, ìyẹn ìtọ̀, á jáde: ó ní omi nínú, àwọn ohun tí ara fi ń ṣiṣẹ́ àti àwọn èròjà olóró.  Dá mi lóhùn ìbéèrè yìí: kí ni ẹyọ kan tí a lè fi ojúyòójú wo kíndìnrín? 