The 20 known transforming (onc) genes of retroviruses are defined by sequences that are transduced from cellular genes termed protooncogenes or cellular oncogenes. Based on these sequences, viral onc genes have been postulated to be transduced cellular cancer genes, and proto-onc genes have been postulated to be latent cancer genes that can be activated from within the cell to cause virus-negat...

Protoporphyrinogen oxidase (Protox) inhibitors and other com pounds which block o r stim­ ulate the porphyrin pathway can cause sufficient levels o f porphyrins to accum ulate in plant tissues for severe photodynam ic dam age to occur. The gross sym ptom ology for all o f these p o r­ phyrinogenic herbicides is similar. Porphyrin accum ulation induced by three porphyrinogenic herbicides acifluo...

A few nucleotide sites of nuclear exons that flank introns are often conserved. A hypothesis has suggested that these sites, called "proto-splice sites," are remnants of recognition signals for the insertion of introns in the early evolution of eukaryotic genes. This notion of proto-splice sites has been an important basis for the insertional theory of introns. This hypothesis predicts that the...

This paper presents a novel semi-automatic translation method for the Phaistos Disk that had no convincing translation for over a century. The method uses for a recently discovered connection between the Phaistos Disk symbols and other ancient scripts, including the Old Hungarian alphabet. The connection between the Phaistos Disk script and the Old Hungarian alphabet suggested the possibility t...

ABSTRACT Deuterium fractionation can constrain the physical and chemical conditions at early stage of brown dwarf formation. We present IRAM 30-m observations over a wide frequency range 213–279 GHz singly doubly deuterated species formaldehyde (HDCO D2CO) towards Class 0/I proto-brown dwarfs (proto-BDs). Multiple low-excitation HDCO D2CO transition lines with upper energy level ?40 K are detec...

background & objective: the current approaches to reduce the risk of colorectal carcinoma are through the detection and removal of the precursor lesion” adenomatous polyps”. the study was conducted to evaluate the immunohistochemical expression of p53 and bcl2 in colorectal adenomas and carcinomas. patients and methods: a total of 86 cases, 33 colorectal adenomas, 33 colorectal adenocarcin...

Retroviruses cause cancers in a variety of animals and humans. Research on retroviruses has provided important insights into mechanisms of oncogenesis in humans, including the discovery of viral oncogenes and cellular proto-oncogenes. The subject of this review is the mechanisms by which retroviruses that do not carry oncogenes (non-acute retroviruses) cause cancers. The common theme is that th...

The theory of behavioral communication for humanoid robots that in teract with humans is discussed in this paper For behavioral communication it is fundamental for a humanoid robot to recognize the meaning of the whole body mo tion of a human According to the previous works it can be done in the symbolic level by adopting the proto symbol space de ned by the Hidden Markov Models based on the mi...

Deep-sea hydrothermal vents are one of the most unique and fascinating ecosystems on Earth. Although phylogenetic diversity of vent communities has been extensively examined, their physiological diversity is poorly understood. In this study, a GeoChip-based, high-throughput metagenomics technology revealed dramatic differences in microbial metabolic functions in a newly grown protochimney (inne...