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].
a type of knapsack carried by hikers, bicyclists, etc. But instead of getting my rucksack, he stepped out of the car and made a call. My father carried a rucksack, a Tommy gun, lots of spare rounds of ammunition, various grenades and a collapsible bicycle. Meathead nodded down the hallway where two olive drab duffel bags and a rucksack sat next to the front door.