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Showing 1-20 of 204 Resources
  • Living Together

    Living Together

    Image of the Week

    Flow patterns generated by cilia around the light organ of the Hawaiian bobtail squid (Euprymna scolopes).

  • New Brain Resolution

    New Brain Resolution

    Image of the Week

    A network of neurons in the brain of a mouse imaged using a novel microscopy technique.

  • Infection Engines

    Infection Engines

    Image of the Week

    A group of intracellular tachyzoites of the toxoplasmosis-causing parasite Toxoplasma gondii.

  • Role of p53 in the Cell Cycle

    Role of p53 in the Cell Cycle

    Data Point

    Researchers investigated the role of p53 in cell cycle regulation by genetically engineering a cell line with deleted copies of the p53 gene. They exposed the cell lines to DNA-damaging radiation and observed how this exposure impacted mitosis.

  • Identifying the Key Genes for Regeneration

    Identifying the Key Genes for Regeneration

    Scientists at Work

    (9 min 55 sec) Planarians have an amazing ability to regenerate lost tissues. In this video, scientists knock out two different genes in planaria to start to understand how the process works—and they generate animals with two heads and two tails!

  • The Beak of the Fish

    The Beak of the Fish

    Image of the Week

    The teeth of adult pufferfish are fused to form a beak used for crunching into hard prey such as shellfish.

  • Polychromatic EM

    Polychromatic EM

    Image of the Week

    A new technique for labeling proteins and other molecules allows them to be clearly visualized and localized in cells in color using electron microscopy.

  • Root Movement

    Root Movement

    Image of the Week

    Root tips constantly search the soil for water and nutrients using the power of cell division and elongation.

  • Counting the Rings

    Counting the Rings

    Image of the Week

    An otolith from a lanternfish (Gymnoscopelus nicholsi) is used to estimate the fish’s age and growth rate.

  • Super Stoma

    Super Stoma

    Image of the Week

    The stomata of grasses (singular stoma) function more efficiently than those of other plants.

  • Red Tattoo

    Red Tattoo

    Image of the Week

    A section of stained human skin bearing a red tattoo.

  • Spiny Cells

    Spiny Cells

    Image of the Week

    A drawing, made by Santiago Ramón y Cajal of pyramidal neurons in the cerebral cortex of a rabbit, documented the presence of dendritic spines on the surfaces of some of the cells.

  • Tugging The Cellular Heartstrings

    Tugging The Cellular Heartstrings

    Image of the Week

    The microtubules inside cardiomyocytes buckle when the heart contracts.

  • Cell Division and Cancer Risk

    Cell Division and Cancer Risk

    Data Point

    Cancer is typically attributed to hereditary and environmental factors, but these only explain a fraction of overall cancer risk. In this study, researchers investigated how a third factor—chance genetic mutations that occur during stem cell division—may contribute to the overall rate of cancer incidence in different body tissues.

  • Sound and Vision

    Sound and Vision

    Image of the Week

    A mass of cells surrounded by blood vessels visualized in a living mouse using photoacoustic imaging.

  • Seeing In the New Year

    Seeing In the New Year

    Image of the Week

    Multi-color labeling of photoreceptor neurons in the developing visual system of the fruit fly (Drosophila melanogaster).

  • Under the Hemiparasite

    Under the Hemiparasite

    Image of the Week

    Many of the 1400 or so species of mistletoes are hemiparasites—they obtain at least part of their nutrition from the host tree.

  • Genetic Mutations and Disease Interactive

    Genetic Mutations and Disease Interactive

    Click & Learn

    This interactive focuses on the roles of germline and somatic cell mutations in human disease. It supports the 2013 Holiday Lectures on Science, Medicine in the Genomic Era.

  • Eat Your Vitamins

    Eat Your Vitamins

    Image of the Week

    Ascorbic acid, or Vitamin C, is an essential component of the human diet.

  • Spooky Sedge

    Spooky Sedge

    Image of the Week

    Oh the horror! A cross-section of the stem of yellow nut sedge plant (Cyperus esculentus)

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