Final answer:
The glomerular capillary bed within the nephron is responsible for producing filtrate through blood filtration in both cortical and juxtamedullary nephrons.
Explanation:
The capillary bed that produces filtrate in the nephron is the glomerular capillary bed. The glomerulus, a tuft of high-pressure capillaries, filters blood based on particle size as part of the renal corpuscle. After filtration, the peritubular capillary network and vasa recta recover most solutes and water. This process occurs in both cortical and juxtamedullary nephrons within the kidney.
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