Microvascular Architecture of the Lingual Papillae in Rabbits.

1998 ◽  
Vol 4 (S2) ◽  
pp. 1058-1059
Author(s):  
T. S. Masuko ◽  
B. König ◽  
B.R. Schmidt

The comparative morphology of the tongue microvasculature has been studied in different animals, such as in man (Okada et al, 1993, Matsukawa and Okada, 1994), rats (Nagato et al., 1989, Ohshima, et al, 1990, Selliseth and Slvig, 1993), dogs (Kishi et al, 1986, Kishi et al 1988), goats(Scala et al, 1992), monkeys (Patterson, et al, 1992, Okada et al, 1993, Matsukawa and Okada, 1994), marmosets (Okada et al, 1993, Matsukawa and Okada, 1994) and shrews (Okada et al, 1993, Matsukawa and Okada, 1994), but apparently none in rabbits. The disposition of the blood vessels of the rabbit's lingual papillae were studied by injecting them with Mercox resin and posterior corrosion, thus obtained microcorrosion casts were observed in the scanning electron microscope.Male and adult rabbits were used to obtain our models. After perfusion with heparin 0,1M, pH 7.4 and glutaraldehyde, both in the same buffer, the vessels were filled as reported above.

2001 ◽  
Vol 9 (3) ◽  
pp. 3-5
Author(s):  
Stephen W. Carmichael

It's always refreshing to read about two old techniques being combined in a novel way to yield new information. Osamu Ohtani and Yuko Ohtani recently accomplished this. Louis Ranvier probably introduced the use of silver nitrate as a histology stain over a century ago. Whereas Ranvier is best known for describing nodes along the nerve fiber, he also demonstrated that silver nitrate stained endothelial cells, allowing their borders to be clearly visualized. In the 1970's, Takuro Murakami first used the scanning electron microscope (SEM) to examine corrosion casts of the vasculature. Much of what we currently know about the microarchitecture of blood vessels has been discovered using this technique.


2002 ◽  
Vol 50 (6) ◽  
pp. 725 ◽  
Author(s):  
Rolf Rutishauser ◽  
Evelin Pfeifer

Cladopus (with 12 or less species) is an Asian and Australian genus of Podostemaceae–Podostemoideae. They are haptophytes that grow in rivers. The developmental morphology and anatomy of Cladopus austro-osumiensis Y.Kadono & N.Usui, C. austrosatsumensis Koidzumi, C. chinensis Chao, C. japonicus Imamura and C. queenslandicus [Domin] C.D.K. Cook & Rutish. (syn. Torrenticola queenslandica [Domin] Domin ex Steenis) are studied by scanning electron microscope and microtome. The architecture of the examined species fits with the bauplan known from other Asian Podostemoideae. Rosulate shoots arise in zigzag patterns or as opposite pairs from narrow or broad green ribbons which may be interpreted as adhesive creeping roots. Cladopus is the only podostemaceous genus known with both endogenous and exogenous lateral roots along the mother root. Exogenous lobes (which may develop into daughter roots) are next to the sites of root-borne shoots which, finally, give rise to terminal flowers. Cladopus species have the following features (synapomorphies) in common: (1) leaves on older and reproductive shoots with one or two median, long filaments (caducous) and 1–4 lateral short lobes (persistent) on either side of the leaf, which are called stipules; (2) spathella (i.e. mantle-like flower cover) with an apical two-tipped papilla; (3) spathella splitting more or less circumscissilely; (4) capsules globose or nearly so, smooth or with three faint ribs per valve.


2009 ◽  
Vol 18 (1) ◽  
pp. 5-10
Author(s):  
E.M. Chaban ◽  
E.V. Soldatenko

Penises of two species of opisthobranch mollusks of Philine were first examined with use of a scanning electron microscope: Ph. aperta (Linnaeus, 1767) and P. finmarchica M. Sars, 1858. This study revealed significant morphological differences. The morphology of male copulatory apparatus of these species is discussed


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