1 ~180 g glucose. 2  almost all of the 180 liters of water that entered the tubules. 3  Blood enters the glomerulus under pressure. 4  This causes water, small molecules (but not macromolecules like proteins) and ions to filter through the capillary walls into the Bowman's capsule. A capillary network within the Bowman's capsule. 2  Blood leaving the glomerulus passes into a second capillary network surrounding the. 3  Proximal convoluted tubule. 4  Coiled and lined with cells carpeted with microvilli and stuffed with mitochondria.
I have been shooting with the Nikon 200-400mm f/4 VR lens for the last 4-5 years and I can assure you that the Nikon 300mm f/2.8G VR II is overall a better lens to buy (unless you shoot large animals from a close distance, like bears in Alaska).
So, a 50-500mm lens on a 1.5x crop factor camera like a Nikon D50 or Sony A100 gives the field of view of a 75-750mm lens. That does give you some zoom power to catch birds with To get an idea about what those mm's mean in terms on what you get on the photo, play around here: www.tamroneurope.com/flc.htm.