|
KMID : 0364219810240030133
|
|
Korean Journal of Zoology
1981 Volume.24 No. 3 p.133 ~ p.144
|
|
|
The Ultrastructure of the Cutaneous Pigment Cells in the Amphibia
|
|
Kim Han-Hwa
Noh Yong-Tai
Chi Young-Duk
Moon Young-Wha
|
|
|
Abstract
|
|
|
|
The ultrastructures of the pigment cells in the Asiatic land salamander (Hynobius leechi) dorsal skin were obtained by means of electron microscope. The results were as follows; 1. The pigment cells of the epidermis consisted of the melanocytes in the germinal layer and of the melanophores distributing to the keratinocyte layer. The traits of these cells in the epidermis were as follows: A. The nuclei of the melanocytes were round or oval in shape and appeared as partly small or large infoldings of the nuclear envelope. B. Rough-surfaced endoplasmic reticulums and Golgi complexes were well developed in infranuclear cytoplasm. Many ribosomes were mainly distributed around the perinuclear portion. C. The melanosomes of the melanocytes were observed as a found or an oval shape and strong electron-dense or less electron-dense melanosomes were observed. D. The infoldings of the nuclear envelope in the melanophore were partly found deeper than those of the melanocyte. The cytoplasm of the melanophore filled with melanosomes caused organelles not to be observed in that. 2. The pigment cells in the dermis were composed of the xanthophores just beneath basement membrane and the melanophores in the connective tissue. The traits of these cells in the dermis were as follows: A. The xanthophores contained round or oval vesicles, and these vesicles were divided into 6 types (type I pterinosome, type II pterinosome, type III pterinosomes, type iv pterinosome, type V pterinosome, type VI pterinosome). B. Most of the nuclei of the melanophores in the dermis were elongate in shape, and a portion of the nuclear envelope was deep infolded. C. Becuase the cytoplasm was filled with the melanosomes of the same electron-density, organelles were not observed in the cytoplasm. D. Two processes of the melanophore in the dermis extended in parallel with a xanthophore and the cytoplasm in those processes were filled with the melanosomes.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|