巻号一覧
48 巻, 1 号
選択された号の論文の4件中1～4を表示しています
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Tetuo Nozue1971 年 48 巻 1 号 p. 1-13
発行日: 1971年
公開日: 2012/09/24
ジャーナル フリー(1) The enamel knot appears as an epithelial cell mass already in the late bud-shaped stage and projected into the dental papilla in the cap-shaped stage. With the advance of development it is replaced by the enamel cord, which is not continuous with the external enamel _ epithelium until the bell-shaped stage. The beginning of amelogenesis is simultaneous with the lost of enamel cord.
(2) The greater the enamel knot becomes, the more compact becomes the mesodermal cells adjacent to it. With the disappearance of the enamel knot the mesoderm condensation vanishes as well.
(3) Mitoses exist only in the peripheral portion of the enamel knot, being reduced in number after the cap-shaped stage. In the enamel cord mitoses are entirely absent.
(4) In the central part of the e namel cord the cells are arranged concentrically, the nucleus slightly swollen, probably a regressive change.抄録全体を表示PDF形式でダウンロード (610K) -
Kunio Takano, Toshio Suzuki, Kenjiro Yasuda1971 年 48 巻 1 号 p. 15-27
発行日: 1971年
公開日: 2012/09/24
ジャーナル フリーThe distribution of enterokinase was examined in the porcine intestine by fluorescent antibody method. The enzyme was concentrated in the goblet cell, and was diffusely localized on the surface of the intestinal epithelium. This distribution pattern was quite different from the result obtained by staining the same tissue with histochemical method for the aminopeptidase. The presence of the enzyme in the goblet cell was quite exciting, since the goblet cell has long been believed to contain only mucin. Together with alkaline phosphatase, non-specific esterase and with γ-A, enterokinase was proven to lodge in the goblet cell. The enzyme may hydrolyze several peptidase in the large intestine rather than activating trypsinogen like in the small intestine.抄録全体を表示PDF形式でダウンロード (586K) -
O. P. Gupta1971 年 48 巻 1 号 p. 29-51
発行日: 1971年
公開日: 2012/09/24
ジャーナル フリーXenentodon is a purely carnivorous fish. Its alimentary canal is divided into—(a) Buccal cavity and pharynx (b) Oesophagus (c) Stomach-intestine (d) Rectum The inner lips are present but a typical palatine organ is missing. Instead the tongue mass forms a pad which fits into a corresponding depression in the roof of the mouth. The inner lip and the tongue mass not only help in respiration but also in holding the prey.
There is a large sac-like structure representing both the stomach and intestine.
The pancreatic and bile ducts open separately on a papilla in the stomach-intestine.
An ilio-rectal valve is present.
Mucosa of the alimentary canal differs in the different regions.
The mechanism of swallowing is quite interesting and shows adaptation for catching and swallowing a living prey.
Buccal cavity is lined by stratified epithelium in which unicellular mucous glands, sensory papillae as well as the taste buds ar e present.
The alimentary canal is composed of serosal, muscularis, subm ucosal and mucosal components. The thickness of these componen ts varies in the different parts.
Apart from the mucosal glands, cells resembling the parietal cells of the mammals, appear to be present in the stomach-intestine.
The liver is enclosed in a fibrous tissue capsule. Two to three hepatic cells are found between any two blood sinusoids.
Bile capillaries are minute canals between the hepatic cells.
The gall bladder is made up of an internal epithelium, a large circular muscle layer and a thin peritoneal layer on the outside. The same layers are continued into the bile duct.
Pancreas is mainly intrahepatic. Both the extra- and intrahepatic portion of pancreas have a thin outer covering.
The endocrine portion of pancreas stains lighter than the exocrine portion.
There is a single islet of Langerhans.抄録全体を表示PDF形式でダウンロード (1184K) -
II. MicrogliaYoshiro Inoue1971 年 48 巻 1 号 p. 53-90
発行日: 1971年
公開日: 2012/09/24
ジャーナル フリーPDF形式でダウンロード (9512K)
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