Assertion: spinal motor neuron | /r/HasProperty | the first
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Source sentences:
text: There is suggestive evidence from a variety of studies on motor neuron disease in human beings (Tsukagoshi et al.,1979; Oyanagi, 1980; Kawamura et al., 1981; Sobue et al.,1987) and in some animal models (Cork et al.,1989) that the largest spinal motor neurons are the first to be lost as the disease progresses.