نتایج جستجو برای: ears distance 1212
تعداد نتایج: 246729 فیلتر نتایج به سال:
Background In patients with ischaemic left ventricular dysfunction, coronary artery bypass surgery (CABG) may decrease mortality, but it is not known whether CABG improves functional capacity. Objective To determine whether CABG compared with medical therapy alone (MED) increases 6 min walk distance in patients with ischaemic left ventricular dysfunction and coronary artery disease amenable t...
In the course of our studies on the role of complement in an t i se rum-media ted damage to allografts and xenografts of skin, we have observed that, whereas serum from C5 deficient mice fails, as expected, to lyse sensitized sheep erythrocytes (SRBC),I whole blood from these animals causes measurable lysis even when di luted 1:100 in saline. This lytic activity occurs only if the cells have re...
For nocturnal insects, predation by bats can turn a moonlight flight into a nightmare. Moths have a way of avoiding bats, however, in the form of ultrasonic hearing. Because they have 'tympanal' ears, they can hear the echolocation calls of incoming bats and take evasive action. Butterflies, which are mainly diurnal, have not been known to have ultrasonic hearing. But these images from an unusu...
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