In this article, radiocarbon dating has been used as a tool for investigating the authenticity of two Mesoamerican artefacts from collection National Museum World Cultures (Museum Volkenkunde), Leiden, Netherlands. The first artefact is ceremonial Aztec, possibly tecpatl, knife, and it presumed to date 1300–1500 CE. second object decorated Mixtec skull, 1400–1520 efficacy was thoroughly tested ...

Primary osteosarcomas of the skull and skull base are rare and comprise < 2% of all skull tumors. In head and neck osteosarcomas, the chondroblastic subtype occurs most frequently, which has an exceedingly poor outcome, but its image characteristic remains unknown. Herein, we report a case in the right occipital bone of the skull base and the unique characteristics of image. Pathologic examinat...

The nucleotide sequence of a T4 tRNA with an anticodon for glycine has been determined using (32)P-labeled material from T4-infected cultures of Escherichiacoli. The sequence is: pGCGGAUAUCGUAUAAUGmGDAUUACCUCAGACUUCCAApsiCUGAUGAUGUGAGTpsiCGAUUCUCAUUAUCCGCUCCA-OH. The 74 nucleotide sequence can be arranged in the classic cloverleaf pattern for tRNAs. The anticodon of T4 tRNA(Gly) is UCC with a p...

The primary sequences of all the tRNA precursors which contain intervening sequences and which accumulate in the Saccharomyces cerevisiae rnal mutant are presented. A combination of DNA and RNA sequence analysis has led to elucidation of the primary sequence of four hitherto uncharacterized precursors. The location of the intervening sequence has in all cases been unambiguously determined by an...

Here, we present complete mitochondrial DNA sequence of Ixodes pavlovskyi Pom., 1946 for the first time. The mitogenome is 14,575 bp in length and contains 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes and a control region. The overall base composition is 40.1% T, 13.8% C, 37.9% A and 8.1% G. Four protein-coding genes are initiated by ATT codon, three genes--by ATA codon and ATG start co...

A two-year-old Thoroughbred colt was presented to the Equine Clinic, Onderstepoort Veterinary Academic Hospital for head trauma after rearing and falling backwards, hitting his head on the ground. Following medical therapy for acute onset neurological impairment secondary to a suspected basilar skull fracture, the horse was anaesthetised and computed tomography of the skull was performed. A dia...

Fracture of the cranial bones following trauma is common. The fracture most commonly encountered in clinical practice is an undisplaced linear fracture of a skull bone or a depressed skull fracture. Compound elevated skull fracture, unlike depressed skull fracture is an extremely rare variety of post-traumatic cranial injury, seldom seen in modern clinical practice. Authors report one such rare...

Received 10/2/2000; revised 11/17/2000; accepted 12/2/2000. For correspondence or reprints contact: Ming-Che Wu, M.D., Department of Nuclear Medicine, MacKay Memorial Hospital, 92, Section 2, Chung-San North Road, Taipei 10449, Taiwan. Tel: (886)2-25433535 ext. 3369, Fax: (886)2-25433535 ext. 2925, E-mail: [email protected] Background: The authors evaluated the performance of Tc-MDP planar sk...

B ONE CHANGES similar to those occtirring in Cooley’s anemia and ohserved in chronic iron deficiency anemia were first described by Reimann in 1956.’ He noted striking alterations, particularly in the skull and also in short and long bones, due to erythroid hyperplasia of the bone marrow. According to Reimann, these changes were never so pronounced as in Cooley’s anemia. In 1958 Eng described b...

this study was conducted to investigate theallometric growth pattern and sexual dimorphism in the skull of both sexes ofiranian brown bear (ursus arctos) in thealborz mountains using geometric morphometric and traditional morphometric techniques. morphometric parameters were obtained from 2d pictures of skulls using the software imagej and allometric growth pattern was calculated as a power fun...