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 .).
Horseshoe crabs â or to be more precise, their incredible, baby blue blood â are used to test for bacterial contamination, thus saving countless lives each year during medical procedures. The only trouble is, we have to catch a quarter of a million horseshoe crabs each year to do this, and then we have to drain their blood. Horseshoe crab blood is unusual for two reasons. Firstly, it gets its incredible blue color from the copper used to carry oxygen around the crabâs body, in the same way the iron in hemoglobin makes our blood red.