The zebrafish heart is similar to the human heart in many respects. But unlike the human heart, the fish heart closes wounds rapidly and then regenerates to nearly full function. Fibroblast growth factor (FGF) is an important molecule in the regeneration process.
Multiple cone snail toxins attack different molecules of the nervous system and cause paralysis.
Electrical and chemical signals are used by neurons to communicate with one another at contact points called synapses.
A live recording of muscle activity from Dr. Jessell's biceps and triceps muscles.
A demonstration by Dr. Barbara Meyer of how a branched genetic pathway can be affected by mutations in different parts of the pathway.
An interview with Silvia Caballero, an undergraduate who discusses what it's like to be in a lab doing scientific research.
A growth cone contacts a repellant molecule on another axon, collapses, and withdraws.
Dr. Bassler demonstrates the bioluminescence of a culture of Vibrio harveyi.
Retinal axons travel across the brain, reading navigation cues, to find appropriate targets.
Quorum sensing signal molecules have parts that are common between species as well as species-specific parts.
A reduction in the level of sonic hedgehog (SHH) gene expression can lead to cyclopia.
Dr. Harshad Vishwasrao guides you through a collection of images showing neuronal growth and synaptic formation representative of anatomical changes that occur during learning.
What medical secrets do venomous snails hold? How can listening in on bacterial conversations help develop new antibiotics? In four presentations, Dr. Bonnie L. Bassler and Dr. Baldomero M. Olivera reveal how a deeper understanding of nature and biodiversity informs their research into new...
Venomous carniverous cone snails are a rich source of molecules for scientific research and potential drug development.
Bacteria are capable of communicating and coordinating their activities with a molecular signaling system called quorum sensing.
Cone snails have evolved many different toxins for different uses. Total molecular biodiversity may number in the millions.
The quorum sensing system is a target for a new class of drugs that interfere with virulence without killing bacteria.
In this 13-minute Q&A session, Dr. Bonnie Bassler answers questions on quorum sensing and other topics related to bacteria.
How a nerve cell gets its identity, sends axons, and makes connections with other cells.
Understanding the neural circuits in the spinal cord that control movement.
The cellular and molecular nature of learning and memory, investigated in simpler sea slugs and more-complex mice.
In four talks, A. James Hudspeth, MD, PhD, and Jeremy H. Nathans, MD, PhD, discuss how sensory information is encoded and transmitted to the brain. They describe the detailed workings of two senses of great importance to humans—vision and hearing.
Dr. Hudspeth will begin by discussing how simple organisms—such as bacteria—have the capacity to detect and react to a stimulus.
Dr. Nathans will discuss how the visual process involves the detection of light by photo-receptors in the retina.
Dr. Hudspeth will explain the basis for the ear’s remarkable ability to detect sound through the hair cell, the sensory receptor found in the inner ear.