Fig. 46.1
Epidural filter. (a) Surface of filtration layer. (b) Detail at higher magnification. Scanning electron microscopy. Magnification: a, ×2,200; b, ×10,000 (From Reina et al. [1]; with permission)
Fig. 46.2
Epidural filter. (a) Surface of filtration layer. (b) Detail at higher magnification. Scanning electron microscopy. Magnification: a, ×1,400; b, ×10,000
Fig. 46.3
Epidural filter. (a), Surface of filtration layer. (b) Detail at higher magnification. Scanning electron microscopy. Magnification: a, ×2,500; b, ×20,000 (From Reina et al. [1]; with permission)
Fig. 46.4
Epidural filter. (a) Surface of filtration layer. (b) Detail at higher magnification. Scanning electron microscopy. Magnification: a, ×3,000; b, ×10,000 (From Reina et al. [1]; with permission)
Fig. 46.5
Epidural filter. (a) Thickness of filtration layer. (b) Detail at higher magnification. Scanning electron microscopy. Magnification a: ×650 b: ×2,0000