The ddx of intrinsic renal disease is: glomerular, tubular, interstitial, or vascular 3. Glomerulonephritis presents with an active sediment (RBC, protein) and nephrotic syndrome presents with a bland sediment (heavy protein, otherwise negative U/A).
Smell is the most subtle of senses touched by spring. In spring there is the sweet fragrance of flowers, which is perhaps the first thing many think of. But my thoughts are drawn to subtler scents. In winter the sun is low and weak, giving little light and even less warmth.
See below for a yearly overview. Another advantage of visiting Istanbul during spring is that you can witness the awakening of the city and Mother Nature. The city becomes more vivid (with the reopening of the terraces) and colorful (with the blossoms of the flowers in general, and the famous tulips in particular).