By Mayo Clinic Staff. An intravenous pyelogram (PIE-uh-low-gram), also called an excretory urogram, is an X-ray exam of your urinary tract. An intravenous pyelogram lets your doctor view your kidneys, your bladder and the tubes that carry urine from your kidneys to your bladder (ureters).
The silver, silver dapple, chocolate flax or Taffy gene. Silver, or silver dapple is the common term used for horses with a dilution gene that works to dilute black pigment. The gene usually causes a partial lightening of black pigment in the body coat and a more extreme lightening (or âsilveringâ) of the mane and tail.
The white horses symbolize joy and victory, especially that resulting from miraculous deliverances. And the dappled horses represent a mixture of good and bad events (Zec 6:1-7). Closely following the symbolism of Zechariah's vision are the four horses of the Apocalypse (Rev 6:2-8). The white horse represents pestilence, or that spirit of conquest which causes wars simply to dominate, oppress, and take from another. The red horse represents war, bloodshed and revolution. The black horse personifies famine, and the pale horse symbolizes death.