The top 10 points leaders on the 2015 NTPGA Players Tour will earn exemptions into the 45th Texas State Open at The Lakes at Castle Hills in Lewisville, Texas, on Tuesday, July 28 - Friday, July 31. The NTPGA Players Tour WILL NOT adopt the USGA Rules of Golf policy on grooves for 2015.2015 Players Tour Information.he Northern Texas PGA annually conducts the NTPGA Players Tour. In 2015, the NTPGA Players Tour will feature five tournaments throughout the month of February.
1 A horseshoe crab's blood has a blue to blue-green color when exposed to air. 2  The blood is blue because it contains a copper-based respiratory pigment called hemocyanin. ( 3 See also types of blood .).
A protein found in the blood of horseshoe crabs is used to detect impurities in intravenous medications; the animals are apparently not harmed during blood extraction. Horseshoe crab blood has also been used in cancer therapy research, leukemia diagnosis and to detect vitamin B12 deficiency.orld Range & Habitat. There are 4 species of horseshoe crabs found in the world today. Limulus is the only species found in the Atlantic Ocean. The remaining three are found in SE Asia where the eggs of some species are used for food.