Results 121 to 130 of about 1,258 (160)

Vascularization of the pituitary of the Australian lungfish and Neoceratodus forsteri

Acta Zoologica, 1999
The vascularization of the brain and the pituitary region of the Australian lungfish, Neoceratodus forsteri is described from serial section reconstruction. The distal lobe has no direct arterial blood supply and receives blood solely from a pituitary portal system basically similar to that of other sarcopterygians.
G N Hansen
exaly   +2 more sources

Histochemical studies of the adrenocortical homologue in the kidney of the Australian lungfish, Neoceratodus forsteri

Cell and Tissue Research, 1975
A histochemical study has been made of groups of cells lying adjacent to the blood vessels of the kidney of Neoceratodus forsteri. The cells contain lipid droplets of varying sizes, stain positively for cholesterol and its esters and contain 3betaol-steroid dehydrogenase activity.
P A Janssens
exaly   +3 more sources

The biology of the australian lungfish,Neoceratodus forsteri (krefft 1870)

Journal of Morphology, 1986
The literature on the biology of the Australian lungfish, Neoceratodus forsteri (Krefft, 1870), over the past 115 years is reviewed. Relevant unpublished information on the habits, environment, and distribution of the lungfish is included. Topics covered are the discovery and taxonomic position of the species, the appearance and habits of adults and ...
exaly   +2 more sources

Homeobox genes in the Australian lungfish,Neoceratodus forsteri

Journal of Experimental Zoology, 1999
The aim of the present study was to determine whether the postulated gnathostome duplication from four to eight Hox clusters occurred before or after the split between the actinopterygian and sarcopterygian fish by characterizing Hox genes from the sarcopterygian lungfish, Neoceratodus forsteri.
T J, Longhurst, J M, Joss
openaire   +2 more sources

In VitroBiosynthesis of Androgens in the Australian Lungfish,Neoceratodus forsteri

General and Comparative Endocrinology, 1996
The serum concentration of testosterone was estimated from a population of wild lungfish over 6-7 years of sampling. Male lungfish were found to have high circulating levels of testosterone (approximately 50 ng/ml) which varied seasonally and could be correlated with spermatogenesis as judged by testis histology. Incubation of testis tissue slices with
J M, Joss, A, Edwards, D E, Kime
openaire   +2 more sources

The adenohypophysis of the Australian lungfish, Neoceratodus forsteri—An immunocytological study

General and Comparative Endocrinology, 1990
The cell types in the adenohypophysis of Neoceratodus resemble closely those already described for Lepidosiren and Protopterus. Four of these were immunocytochemically identified as prolactin cells, gonadotropes, corticotropes, and melanotropes. Antiserum to bullfrog growth hormone could not distinguish between prolactin cells and somatotropes.
J M, Joss, M, Beshaw, S, Williamson, J, Trimble, R M, Dores   +4 more
openaire   +2 more sources

Ultrastructure of the integumental melanophores of the Australian lungfish, Neoceratodus forsteri

Cell and Tissue Research, 1975
The integumental melanophores of Australina lungfish, Neoceratodus forsteri, were examined by light and electron microscopy and found to possess essentially the same structural characteristics observed in other vertebrates. The epidermal melanophores are located in the intermediate epidermis and possess round perikarya and slender dendrites extending ...
H, Imaki, W, Chavin
openaire   +2 more sources

The Australian lungfish, Neoceratodus forsteri: A personal story

General and Comparative Endocrinology, 2011
The following is a brief description of how lungfish research at Macquarie University began, of the period in which it flourished, and, most recently, of the winding down of the University's involvement with this research. During this latter period, the Australian lungfish in the wild were threatened by the construction of a megadam in their very ...
openaire   +2 more sources

Teleost-Type Angiotensin Is Present in Australian Lungfish,Neoceratodus forsteri

General and Comparative Endocrinology, 1999
Angiotensin I (ANG I) was produced from the incubation of lungfish plasma with homologous kidney extracts. The purified peptide was found to have the sequence of H-Asn-Arg-Val-Tyr-Val-His-Pro-Phe-Thr-Leu-OH, which is homologous for the first eight residues with all teleost angiotensins so far sequenced, although lungfish generally possess tetrapod-type
J M, Joss, Y, Itahara, T X, Watanabe, K, Nakajima, Y, Takei   +4 more
openaire   +2 more sources

True enamel covering in teeth of the Australian lungfish Neoceratodus forsteri

Cell and Tissue Research, 1999
Lungfish are a unique order of sarcopterygian fish cleidographically positioned between tetrapods and fish. An uninterrupted 400-million-year-old fossil record has documented lungfish skeletal elements to remain virtually unchanged since the Early Devonian.
P G, Satchell, C F, Shuler, T G, Diekwisch   +2 more
openaire   +2 more sources