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BACKGROUND Little is known of the course and prognosis of hypersensitivity vasculitis (HV). METHODS Sixty-one cases of idiopathic HV were biopsied and followed-up for 5 years. RESULTS There were two predominant patterns of presentation: palpable purpura (PP) and vasculitic ulcers (VU). The former was self-limiting, whereas the prognosis of the latter… (More)
The content of survival factors for sympathetic, sensory and parasympathetic neurones in the heart was examined after denervation with either 6-hydroxydopamine or vagal transection. There was a correlation between the type of nerve sectioned in vivo and the type of neurone whose survival in vitro was enhanced by the presence of denervated target tissue.