منابع مشابه
Alarm Calls
Animals commonly vocalize when threatened by a predator. These signals, usually termed alarm calls (from old Italian all arme ‘to arms’ on the approach of an enemy), have continued to bewilder and fascinate for a number of reasons, the first of which is mainly practical. In animal research, it is often difficult to break down the continuous behavioral stream into discrete and meaningful units, ...
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T ERMATOSES of diverse etiology have been -I-~ reported to give rise to skin and mucous membrane lesions whose morphology, symptomatology, course, and microscopic picture cannot be distinguished from lichen planus. Drugs,1-6 vaccines,7 contact with chemicals,8-'3 and exposure to ultraviolet light and Grenz rays14 are prominent among the causative agents which have been observed to produce liche...
متن کاملLichen planus pigmentosus and lichen planopilaris.
Lichen planus is an inflammatory skin conditionwith characteristic histopathological findings thathas many clinical variants. Recently, there have been25 cases reported in the literature of lichen planuspigmentosus (LPPi) that preceded the developmentof frontal fibrosing alopecia (FFA), which is a variantof lichen planopilaris (LPP). We review the literatureregarding LPPi, LPP, and FFA and pres...
متن کاملBlooming alarm
warning that deadly new strains of tuberculosis, virtually untreatable using the drugs currently available, appear to be spreading across the globe, raising the spectre of a resurgence in a disease which for many generations has laid in the background, seemingly beaten, but which may now make a major comeback as a lethal new pathogen. The new strains are known as extreme drug-resistant TB or XD...
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ژورنال
عنوان ژورنال: Nature
سال: 1973
ISSN: 0028-0836,1476-4687
DOI: 10.1038/245168b0