No abstract available.

The morphologic development of the liver in the embryonic period is described in serial sections of 18 human embryos representative of Horizons 12 to 23 . In the earliest specimen of horizon 12, the liver is seen as branching cord of endodermal cells originating from the hepatic diverticulum and invading into the loose stroma of septum transversum, transforming the surrounding stromal cells into primitive blood spaces and blood cells. Thereafter, the parenchymal cells rapidly proliferated so that the size of the organ was reaching a fifth of the CR length in horizon 23. The vascular system of the liver was in a symmetric configuration in horizon 12, which is composed of umbilical and vitelline veins and hepatocardiac channels on both sides. The evolution of the vascular system includes intergration of the vitelline veins into the portal vein, obliteration of the right umbilical vein and left hepatocardiac channel, and creation of the ductus venosus. The intrahepatic biliary tract is found to be formed by the "in situ transformation" mechanism, which involves transformation of the parenchymal cells, adjacent to the fibrous tissue surrounding the portal and umbilical veins, to networks of cuboidal epithelial cells lining the ductal lumen. These intrahepatic duct systems were found to communicate with the extrahepatic system at the porta hepatis.
Humans

No abstract available.

No abstract available.
Transplants*

No abstract available.
Transplants*

No abstract available.
Osteotomy ; Syphilis, Congenital

No Abstract available.
DNA, Complementary* ; Oligonucleotide Array Sequence Analysis* ; Statistics as Topic*

Since its initial description in 1930, the preexcitation or Wolff-Parkinson-White(W-P-W) syndrome is characterized by a special electrocardiographic pattern and various paroxysmal tachyarrhythmia, which was found to have reciprocating tachycardia frequently. The W-P-W syndrome develops when some part of a ventricle is activated earlier than normal conduction pathway, and described as one type of ventricular preexcitation syndromes by Durrer (1974). The diagnostic criteria of the W-P-W syndrome are 1) initial slurring (delta wave) of the QRS complex, 2) short P-R interval, 3) widened QRS complex and 4) secondary T wave change. The initial slurring of the QRS complex (delta wave) which is the most important finding of preexcitation syndrome results from a premature activation of a portion of the ventricle through an accessary pathway which bypasses the A-V node and bundle. These accessary conduction fiber includes Kent's bundle, Jame's fibers, Mahaim's fibers and its combination. Recent developments in the field of electrophysiology and surgical therapy became to support the concept of anomalous pathways and the possible determination of the re-entry circuit of paroxysmal tachycardia. Total 12 cases including 9 cases of classical W-P-W syndromes and 3 cases of L-G-L syndromes were followed with special interest of pre-excitation phenomenon and paroxysmal tachyarrhythmia at the National medical Center during the period of Jan. 1975 to Feb. 1979 and found to have paroxysmal tachyarrhythmia in 8 cases out of 12 cases. His bundle electrogram (HBE) and right atrial pacing were recoded in 2 cases of W-P-W type B to support the existance of an anomalous pathway. Treatment was instituted in accordance with recent advanced knowledge for the paroxysmal tachyarrhymia and pre-excitation and references were reviewed.
Atrioventricular Node ; Electrocardiography ; Electrophysiologic Techniques, Cardiac ; Electrophysiology ; Pre-Excitation Syndromes ; Tachycardia ; Tachycardia, Paroxysmal ; Tachycardia, Reciprocating ; Wolff-Parkinson-White Syndrome*

No abstract available.
Cells, Cultured* ; Mycoplasma*

OBJECTIVES: The purpose of this study is to test the reliability of the Korean version of self-compassion scale (K-SCS). METHODS: The total of 484 participants were included in this study. Reliability studies were conducted and internal consistency were examined. RESULTS: The internal consistency of the K-SCS was 0.76, and test-retest reliability was 0.53. CONCLUSION: The K-SCS appeared to be a reliable instrument for assessing self-compassion in Korean population. If supplements further studies of the validity, this scale may be applicable in clinical trials, research, clinical practice.