Secondary colors are the superstars that shine when any two of the three primary colors — red, blue and yellow — team up. The results are orange, green and purple. Think of them as the second level of ...

Angiography of the right foot also revealed impaired flow (Figure 2B). Duplex ultrasonography (DUS) images of the right popliteal artery showed no evidence of any color filling of the arterial lumen ...