Normally, protein is not removed when the kidneys filter waste from the blood. However, when the kidneys are damaged, protein leaks through the damaged filters and is removed from the body in the urine, along with the waste products.
1. rucksack-a bag carried by a strap on your back or shoulder. back pack, backpack, haversack, knapsack, packsack. bag-a flexible container with a single opening; he stuffed his laundry into a large bag. kit bag, kitbag-a knapsack (usually for a soldier).ucksack. n. 1. a large bag, usually having two straps and a supporting frame, carried on the back and often used by climbers, campers, etc. US and Canadian name: backpack. [C19: from German, literally: back sack].
rut1. 1  a furrow or track in the ground, especially one made by the passage of a vehicle or vehicles. 2  any furrow, groove, etc. 3  a fixed or established mode of procedure or course of life, usually dull or unpromising: to fall into a rut. 4  to make a rut or ruts in; furrow.