Happy 50th birthday.
Alvis
David
D
D000846:Anniversaries and Special Events; D005451:Fluorescein Angiography / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D008833:Microcirculation; D012039:Regional Blood Flow / Q000502:physiology; D012171:Retinal Vessels / Q000502:physiology; D014481:United States