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Volume 64 (1987 - 198･･･
- Issue 6 Pages 291-
- Issue 5 Pages 223-
- Issue 4 Pages 157-
- Issue 2-3 Pages 99-
- Issue 1 Pages 1-
Predecessor
Volume 64, Issue 2-3
Displaying 1-6 of 6 articles from this issue
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Kuniaki TOYOSHIMA, Kenji MIYAMOTO, Akitatsu SHIMAMURA1987 Volume 64 Issue 2-3 Pages 99-109
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe fine structure of taste buds in the tongue, palatal mucosa and gill arch of the axolotl, Ambystoma mexicanum, was examined by means of electron microscopy. The taste buds consisted of three types of cells: light, dark and basal cells. The light cell was characterized by the presence of microtubules in the supranuclear cytoplasm and two kinds of vesicles, dense-cored and synaptic vesicles, in the basal cytoplasm. This cell type had afferent synaptic contacts with nerve fibers. The supranuclear cytoplasm of the dark cell was filled with secretory granules. Membrane fragments were always associated with microvilli of the dark cells. The basal cell, located only at the basal part of the taste bud, contained dense-cored vesicles mainly in the basal cytoplasm. Neither the synaptic vesicle nor the synaptic contact were found in this cell type.View full abstractDownload PDF (3622K) -
Masumi AKITA, Seong Ho LEE, Katsuji KANEKO1987 Volume 64 Issue 2-3 Pages 111-119
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSUsing tissues from mouse and rabbit aortae, rabbit skin, sublingual and thyroid glands, and pancreas, we compared the staining properties of Weigert's resorcin-fuchsin and reported modifications at light-and electron microscopic levels. Aoki's and Horobin's modifications exhibited highly specific staining for elastic fibers, while Weigert's original solution and Romeis' modification stained thyroid colloids and B-cells of Langerhans' islets. Weigert's original solution also stained external and internal root sheaths of hair. In the model tissue experiment using polyamino acids, Weigert's original solution and Romeis' modification stained many polyamino acids such as glycine and tryptophan. Therefore, besides elastic fibers, Weigert's original solution and Romeis' modification stain other tissue components including glycine or tryptophan, which are not characteristic amino acids in elastin and may produce strong background-staining. The electron density of elastic fibers was markedly enhanced by all examined staining solutions except Horobin's modification. Our findings suggest that while resorcin is not an essential component for the staining of elastic fibers, it is required to improve the electron contrast of elastic fibers.View full abstractDownload PDF (2742K) -
Bunsuke OSOGOE, Masako YANAGAI1987 Volume 64 Issue 2-3 Pages 121-129
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSAutoradiographic examinations were made of tissue sections of the lung and liver following 3 daily injections of [14C] adenine (14C]A) and [3H] thymidine (3H] TdR)(1μCi/g body weight each)into lats and mice. It was levealed that alveolar wall cells of the lung, particularly macrophages, were intensely labeled with [14C] A even after RNase treatment. In contrast, sinusoidal cells of the liver, including Kupffer cells within the lobules, showed almost no labeling with [14C] A following RNase treatment, although these cells were intensely labeled with [3H] TdR in fairly large numbers. In view of our earlier observations that monocyte precursors in the bone marrow in rats, and aportion of blood monocytes as well, are labeled with [14C]A to an extraordinarily great degree, it can be stated that the present findings in the lung support the view that tissue macrophages are detived from monocytes, but that corresponding findings in the liver do not favor such a view.View full abstractDownload PDF (2418K) -
Katsuji KANEKO, Eiko MURATA, Keiko FUJITA, Masumi AKITA1987 Volume 64 Issue 2-3 Pages 131-139
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSHistochemical observation of mucous neck cells of rat employing Mayer's hemalum, alcian blue and high iron diamine showed following distinguishable distribution of mucins depending on physical location of the observed fundic glands. 1) In the region of cardiac glands acidic mucins are predominantly distributed. 2) Along the greater curvature acidic mucins are densely distributed in the upper neck region, while more neutral mucins are observed in the lower neck region. 3) Along the lesser curvature acidic mucins are also observed but not in a regular arrangement seen in the greater curvature. 4) At greater distance from the cardiac glands neutral mucins are predominantly distributed.View full abstractDownload PDF (3112K) -
Tatsuo KASAI, Takao SUZUKI, Masashi KODAMA, Yuko OKUNO1987 Volume 64 Issue 2-3 Pages 141-146
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIn order to reach a clear definition of the Isthmus aortae (BNA, INA and PNA), the outer and inner diameters of six portions of the aortic arch, as shown in Fig.1, were measured in 24 human adults and 20 fetuses. The narrowing of the vessel was actually located between the origin of the left subclavian artery and the insertion of the ductus arteriosus in fetuses, but was found to be unremarkable in adults. The term Isthmus aortae thus belongs to the embryological nomenclature. Summarizing the previously reported cases of anomalies of the aortic arch, it can be said that the ductus arteriosus usually remains in loco, in spite of the transformation of the aortic arch, connecting the pulmonary trunk with the left aortic arch or the beginning of the descending aorta, crossing over the left bronchus. When this situation is considered from the stand point of embryology together with the upward migration of the developing left subclavian artery, the presence of a developmental weak point (Locus minoris resistentiae) can be suspected in the developing left aortic arch. This portion corresponds to the Isthmus aortae in normal cases, and most anomalies of the aortic arch are genetically based on maldevelopment of this portion.View full abstractDownload PDF (1475K) -
Nobuaki HIGASHI, Choji SONE1987 Volume 64 Issue 2-3 Pages 147-155
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThis report describes a case of brachial biceps with bilaterally abnormal bundles of origin and insertion which was encountered during the dessection of an 86 year-old Japanese female cadaver in the anatomical laboratory of Kanazawa Medical University. There was an accessory head and tail in the brachial biceps of the right upper arm. The accessory head (Caput tertium) arose from the fibrous capsule of the shoulder joint and pectoralis major tendon. In caput tertium, the head was attached to the internal front part of the venter of caput breve. The accessory tail arose from the medial rear part of the venter of caput breve. This tail was separated into the medial and lateral tendons. The medial tendon was mainly attached to the caput ulnae in the pronator teres and the fibrous capsule of the elbow joint. The lateral tendon surrounded the rear side of the biceps tendon. There were an accessory head and tail in the brachial biceps of the left upper arm. The accessory head (Caput tertium) arose from the fibrous capsule of the shoulder joint and pectoralis major tendon. This head was attached to the front part of the junction of the two ordinary heads of the brachial biceps. The accessory tail arose from the medial rear part of the venter in the caput breve and was separated into the medial and lateral tendons. The medial tendon was attached to the medial side of the bicipital aponeurosis. The lateral tendon was attached mainly to the caput ulnae of the pronator teres, and the medial intermuscular septum and the fibrous capsule of the elbow joint.View full abstractDownload PDF (2459K)
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