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Titolo:
ULTRASTRUCTURE OF THE GRANULOCYTES OF THE SOUTH-AMERICAN LUNGFISH, LEPIDOSIREN-PARADOXA - MORPHOGENESIS AND COMPARISON TO OTHER LEUKOCYTES
Autore:
BIELEK E; STRAUSS B;
Indirizzi:
UNIV VIENNA,INST HISTOL & EMBRYOL A-1090 VIENNA AUSTRIA
Titolo Testata:
Journal of morphology
fascicolo: 1, volume: 218, anno: 1993,
pagine: 29 - 41
SICI:
0362-2525(1993)218:1<29:UOTGOT>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEOCERATODUS-FORSTERI KLEFFT; TORPEDO-MARMORATA-RISSO; SCYLIORHINUS-CANICULA L; ELASMOBRANCH GRANULOCYTES; AUSTRALIAN LUNGFISH; BLOOD-CELLS; LEUKOCYTES; THROMBOCYTES; FISH;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
38
Recensione:
Indirizzi per estratti:
Citazione:
E. Bielek e B. Strauss, "ULTRASTRUCTURE OF THE GRANULOCYTES OF THE SOUTH-AMERICAN LUNGFISH, LEPIDOSIREN-PARADOXA - MORPHOGENESIS AND COMPARISON TO OTHER LEUKOCYTES", Journal of morphology, 218(1), 1993, pp. 29-41

Abstract

Ultrastructure and peroxidase cytochemistry of the granulocytes of the lungfish Lepidosiren paradoxa were investigated. In peripheral bloodand hemopoietic tissue (kidney and spleen) only three granulocytic types were found. After comparison with light microscopic images of Giemsa-stained semithin sections the granulocytes were tentatively designated as eosinophilic I, eosinophilic II, and a basophilic type. The eosinophilic I cell was the most numerous granulocyte and was characterized by granules ranging in diameter from 0.2-1.8 mum. A developmental series was observed, leading from small, peroxidase (PO) positive granules to large ones with PO-negative cores and only peripheral PO-positive reactivity. The central electron-dense cores of the larger granuleswere often eroded. The eosinophilic II cell was less numerous than the eosinophilic I type and had smaller (diameter 0.4-0.9 mum) granules than the eosinophilic I type, some of them elongated and rod like. Thebasophilic cell was rare and contained large, homogeneously dense granules measuring up to 1.2 mum in diameter. Immature stages of the granulocytic types showed vesicular rough endoplasmic reticulum. Nuclear indentation and segmentation occurred early in development, in contrastto the relatively late onset of these processes in mammals. Monocytesand macrophages had an irregular or slightly indented nucleus and lacked the specific granules of the granulocytes. Phylogenetic relationships were discussed with special reference to the question of the evolution of only one or possibly of two separate heterophilic/neutrophiliccell lines in fishes. (C) 1993 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 08:53:49