A US scientist has developed a 'double-barrelled' syringe which he says could make blood tests more reliable. Microbiologist-turned-inventor Juan Walterspiel, of Atlanta, Georgia, says the device ...

Venipuncture of the right saphenous (interfemoral) vein in the uropatagium of a male Egyptian fruit bat (Rousettus aegyptiacus) using a 1-ml syringe with a 27-gauge needle. Full size image ...