scholarly journals STUDIES ON CILIA

1963 ◽  
Vol 18 (2) ◽  
pp. 345-365 ◽  
Author(s):  
Peter Satir
Keyword(s):  
Fine Structure ◽  
Electron Microscope ◽  
Cross Section ◽  
Osmium Tetroxide ◽  
Freshwater Mussel ◽  
Structure And Function ◽  
Spring Water ◽  
Fine Structure And Function ◽  
And Function ◽  
Active Preparation

Upon excision into spring water, the lateral cilia of the gill of the freshwater mussel Elliptio complanatus (Solander) stop beating, but 0.04 M potassium ion can activate the gill so that these cilia again beat with metachronal rhythm. One per cent osmium tetroxide quickly pipetted onto a fully activated gill fixes the lateral cilia in a pattern that preserves the form and arrangement of the metachronal wave, and permits the cilia to be studied with the electron microscope in all stages of their beat cycle. Changes are seen in the fixed active preparation that are not present in the inactive control, i.e., in the packing of the cilia, the position of the axis of the ciliary cross-section, and the diameter of the ring of peripheral filaments. Analysis of these parameters may lead to new correlations between ciliary fine structure and function.

The fine structure and function of the adult epidermis of two skin parasitic monogeneans, Entobdella soleae and Acanthocotyle elegans

Parasitology ◽  
1970 ◽  
Vol 60 (1) ◽  
pp. 39-52 ◽  
Author(s):  
Kathleen M. Lyons
Keyword(s):  
Fine Structure ◽  
Electron Microscope ◽  
Outer Layer ◽  
Structure And Function ◽  
Free Living ◽  
Transitional State ◽  
Covering Layer ◽  
Fine Structure And Function ◽  
And Function ◽  
Host Tissues

Electron-microscope investigations on the outer layers of parasitic platyhel-minths have so far neglected the monogeneans and have been confined to the endoparasitic digeneans and cestodes (Braten, 1968; Burton, 1966; Charles & Orr, 1968; Erasmus, 1967; Lumsden, 1966; Morris & Threadgold, 1967; Race, Larsh, Esch & Martin, 1965; Rothman, 1968; Threadgold, 1965). For this reason the covering layer of monogeneans is still referred to as a ‘cuticle’ even though it is unlikely to be so since the surface of the endoparasitic platyhelminths has been shown to be a living cytoplasmic ‘epidermis’ (see Lee, 1966) which, as pointed out by Erasmus (1967) and Lumsden (1966), constitutes a metabolically active inter-face with host tissues and fluids. Two main considerations prompted the present investigations of the covering layer of monogeneans. First, it was hoped that a comparison of the covering layer of these ectoparasites with that of the digeneans and cestodes might help to define particular specializations of this layer associated specifically with the ectoparasitic or endoparasitic habit; secondly, because ectoparasitism can, in an evolutionary sense, be considered as a transitional state between a free-living and an endoparasitic existence (see Llewellyn, 1965), it was felt that this work on monogeneans could assist an understanding of the evolution of the platyhelminth outer layer.

Fine structure and function of kupffer cells

1990 ◽  
Vol 14 (3) ◽  
pp. 237-246 ◽  
Author(s):  
Robert S. McCuskey ◽  
Patricia A. McCuskey
Keyword(s):  
Fine Structure ◽  
Kupffer Cells ◽  
Structure And Function ◽  
Fine Structure And Function ◽  
And Function

Fine structure and function of hepatocytes during development

1990 ◽  
Vol 14 (2) ◽  
pp. 92-105 ◽  
Author(s):  
Shinsuke Kanamura ◽  
Kazuo Kanai ◽  
Jun Watanabe
Keyword(s):  
Fine Structure ◽  
Structure And Function ◽  
Fine Structure And Function ◽  
And Function
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