Xenopus tropicalis, a new model for vertebrate developmental genetics

GRAINGER, R.M.; University of Virginia, Charlottesville: Xenopus tropicalis, a new model for vertebrate developmental genetics The pipid frog Xenopus laevis has been among the most productive model systems for vertebrate experimental embryology. Development of genetic approaches in this system would provide a very powerful complement to embryological methods when trying to understand complex developmental processes. […]

Viewing cell movements in the developing neuroendocrine brain

TOBET, SA; WALKER, HJ; SENEY, ML; The Shriver Center at UMMS; The Shriver Center at UMMS; The Shriver Center at UMMS: Viewing cell movements in the developing neuroendocrine brain Many studies suggest that migratory guidance cues within the developing brain are diverse across many regions. To better understand the early development and differentiation of select […]

The Ups and Downs in Using Subtractive Cloning Approaches to Isolate Regulated Genes

GOETZ, F.W.; Marine Biological Laboratory: The “Ups” and “Downs” in Using Subtractive Cloning Approaches to Isolate Regulated Genes Over the last decade, subtractive cloning approaches have been used extensively to isolate genes that are up- or down-regulated under various conditions. These techniques have provided the foundation for many subsequent studies concerning gene function and regulation […]

Social regulation of the brain New ways to discover the roles of status, sex and size

FERNALD, Russell D.; Stanford University, Stanford, CA: Social regulation of the brain: New ways to discover the roles of status, sex and size It is self evident that the brain controls behavior but can behavior also ‘control’ the brain? Recent evidence has revealed that social behavior can cause changes in certain brain structures of adult […]

Sex differences in the songbird brain using molecular tools to investigate brain sexual differentiation in a comparative model

CARRUTH, L.L.; ARNOLD, A.P.; Georgia State Univeristy; University of California, Los Angeles: Sex differences in the songbird brain: using molecular tools to investigate brain sexual differentiation in a comparative model Early in development, male and female brains diverge in their patterns of growth and differentiation, especially in brain regions involved in the control of behavior. […]

Microarrays and Brain Research

EVANS, SJ; WATSON, SJ; AKIL, H; University of Michigan; University of Michigan; University of Michigan: Microarrays and Brain Research DNA microarrays have become a popular tool to simultaneously profile the expression of thousands of transcripts in response to experimental manipulation or abnormal states of biological systems. However, neuroscience presents significant challenges to the use of […]

Microarray analysis of pheromone-mediated gene expression in the honey bee brain

GROZINGER*, Christina M.; ROBINSON, G.E.; University of Ilinois; University of Illinois: Microarray analysis of pheromone-mediated gene expression in the honey bee brain Pheromones regulate a wide variety of behaviors in both vertebrate and invertebrates. Honey bees are an established model organism to study pheromones: their highly complex society is predominantly regulated by chemical communication, and […]

Yolk lipid allocation varies seasonally, but not with age, in the painted turtle

HARMS, H.K.; PAITZ, R.T.; BOWDEN, R.M.; JANZEN, F.J.; Iowa StateUniversity; Iowa StateUniversity; Iowa StateUniversity; Iowa StateUniversity: Yolk lipid allocation varies seasonally, but not with age, in the painted turtle Although turtles are often thought to exhibit indeterminate growth, it appears that growth slows appreciably sometime after the onset of reproduction. However, because females are still […]

WOUND-HEALING, EXTERNAL EFFECTS AND MORPHOLOGY IN MARINE SPONGES

BOND, C.*; NEFF, J.; Greensboro College, Greensboro NC; Greensboro College, Greensboro NC: WOUND-HEALING, EXTERNAL EFFECTS AND MORPHOLOGY IN MARINE SPONGES Experiments were done to examine the effects of ambient light and flow on wound-healing in sponges; the effects of wounding on sponge internal structure were also examined. Wounds (1-5-mm gashes) were made with glass needles […]

Vitellogenin production rates underlying reproductive plasticity and canalization in the lubber grasshopper

WASKEY, TJ; HATLE, JD; JULIANO, SA; Illinois State Univ: Vitellogenin production rates underlying reproductive plasticity and canalization in the lubber grasshopper The study of physiology underlying phenotypic plasticity of reproduction seeks to explain how organisms developmentally alter reproductive tactics in response to environmental perturbations. We measured ovarian masses, oocyte lengths, and rates of egg-yolk protein […]

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