Collagenase, collagenolytic activity and tissue inhibitor of metalloproteinases were evaluated in bronchoalveolar lavage from 25 patients with hypersensitivity pneumonitis and four control subjects. Patients were followed ...

We studied the fine structural organization of the meristematic nucleus in roots of Lycopersicon esculentum (tomato) using ultracytochemical and immunocytochemical approaches. The nucleus has a non-reticulate (i.e. low ...