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Materias / palabras clave: Tecnología; Agricultura; Ciencia de los cultivos; Technology; Agriculture; Crop Science; Science; Life sciences; Biology; Developmental biology; Ciencias; Ciencias naturales; Biología; Biología del Desarrollo

Materias / palabras clave: Tecnología; Agricultura; Ciencia de los cultivos; Technology; Agriculture; Crop Science; Science; Life sciences; Biology; Developmental biology; Ciencias; Ciencias naturales; Biología; Biología del Desarrollo

Materias / palabras clave: Science; Life sciences; Biology; Developmental biology; Ciencias; Ciencias naturales; Biología; Biología del Desarrollo

Materias / palabras clave: Science; Life sciences; Biology; Developmental biology; Ciencias; Ciencias naturales; Biología; Biología del Desarrollo

Materias / palabras clave: Tecnología; Agricultura; Ciencia de los cultivos; Technology; Agriculture; Crop Science; Science; Life sciences; Biology; Developmental biology; Ciencias; Ciencias naturales; Biología; Biología del Desarrollo

Materias / palabras clave: cell biology, developmental biology, stem cell biology, molecular medicine, molecular cell biology; Science: Biology (General)

Materias / palabras clave: molecular biology; Science: Biology (General)

We examine and refine the Fagerström Tolerance Questionnaire (FTQ: Fagerström, 1978). The relation between each FTQ item and biochemical measures of heaviness of smoking was examined in 254 smokers. We found that the n...

Human blastocyst-derived, pluripotent cell lines are described that have normal karyotypes, express high levels of telomerase activity, and express cell surface markers that characterize primate embryonic stem cells but ...

Programmed cell death (PCD) plays a key role in developmental biology and in maintenance of the steady state in continuously renewing tissues. Currently, its existence is inferred mainly from gel electrophoresis of a poo...

Somatic cell nuclear transfer allows trans-acting factors present in the mammalian oocyte to reprogram somatic cell nuclei to an undifferentiated state. We show that four factors (OCT4, SOX2, NANOG, and LIN28) are suffic...

We describe a series of stages for development of the embryo of the zebrafish, Danio (Brachydanio) rerio. We define seven broad periods of embryogenesis--the zygote, cleavage, blastula, gastrula, segmentation, pharyngula...

A model is presented to account for the natural selection of what is termed reciprocally altruistic behavior. The model shows how selection can operate against the cheater (non-reciprocator) in the system. Three instance...

A 2.91-billion base pair (bp) consensus sequence of the euchromatic portion of the human genome was generated by the whole-genome shotgun sequencing method. The 14.8-billion bp DNA sequence was generated over 9 months fr...

Here is a book that challenges the very basis of the way psychologists have studied child development. According to Urie Bronfenbrenner, one of the world's foremost developmental psychologists, laboratory studies of the ...

Materias / palabras clave: cell science, developmental biology, experimental biology, cell biology, animal physiology; Science: Biology (General)

Materias / palabras clave: cell biology, developmental biology, molecular biology, biochemistry, immunology, microbiology; Science: Biology (General)

Materias / palabras clave: developmental biology, reproductive medicine; Medicine: Internal medicine: Specialties of internal medicine: Immunologic diseases. Allergy; Medicine: Internal medicine: Specialties of internal medicine: Diseases of the e...

Materias / palabras clave: ecology, biodiversity, evolutionary biology, phylogenetics, palaeontology, developmental biology; Science: Biology (General): Ecology; Science: Biology (General): Evolution

Materias / palabras clave: respiratory tract anatomy, biology, developmental biology, toxicology, pathology; Medicine: Internal medicine: Specialties of internal medicine: Diseases of the respiratory system; Science: Human anatomy

Materias / palabras clave: molecular biology, cell biology, life sciences, developmental biology; Science: Biology (General)

Materias / palabras clave: human reproduction, reproductive medicine, embryology, infertility, developmental biology; Medicine: Gynecology and obstetrics; Science: Biology (General): Reproduction

Materias / palabras clave: biochemistry, protein science, cell biology, stem cells, human genetics, developmental biology; Science: Biology (General): Cytology; Science: Physiology: Animal biochemistry

Materias / palabras clave: developmental biology, hydrobiology, animal and plant biology, biotechnology, biochemistry and molecular biology, physiology; Science: Biology (General): Genetics; Science: Biology (General): Reproduction; Science: Physi...