Biologists at Northeastern University have peered directly at running muscles by measuring blood flow in the legs of the helmeted guinea fowl Numida meleagris. 而美国东北大学的生物学家则是直接观察「盔珠鸡」的肌肉,测量跑步时血液在腿中流动的情形。
Day old Isa guinea fowls ( Numida meleagris) were challenged with newcastle disease virus ( NDV) and infectious bursa diseases virus ( IBDV) respectively. 21日龄伊莎珍珠鸡分别用新城疫病毒(NDV)、传染性法氏囊炎病毒(IBDV)攻毒,并设相同日龄雏鸡攻毒做对照。