Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Feedback Inhibition

Feedback Inhibition

Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!

Feedback Loops

Feedback Loops

In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.

Internal Receptors

Internal Receptors

Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.

Inclusive Fitness

Inclusive Fitness

Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help.

Cross-reactivity

Cross-reactivity

Contact-dependent Signaling

Contact-dependent Signaling

Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
In animal cells, gap junctions are formed...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Analysis of the Epidemiological Characteristics and Public Health Response to Healthcare Facility-associated Measles Outbreaks in the Honam Region, Republic of Korea, 2025.

Public health weekly report·2026

Same author

Adoption of artificial intelligence in drug review across the lifecycle: Transformation of regulatory decision-making.

Regulatory toxicology and pharmacology : RTP·2026

Same author

Medium-chain inulin reshapes the gut microbiome-metabolome axis to counteract high-fat diet-induced obesity.

Phytomedicine : international journal of phytotherapy and phytopharmacology·2026

Same author

Astrocyte-microglia crosstalk unlocks Alzheimer's disease.

Immunity·2026

Same author

Comparison of immediate therapeutic effects of 3% diquafosol and 2% rebamipide in dry eye disease: a prospective, randomized, paired-eye trial.

Scientific reports·2026

Same author

Atherosclerosis Profiling Reveals BHLHE40 as a Candidate Modulator of VSMC.

Circulation research·2026

Same journal

The authors reply.

Critical care medicine·2026

Same journal

Attracting Emergency Medicine Graduates to Surgical Critical Care Training Programs.

Critical care medicine·2026

Same journal

The authors reply.

Critical care medicine·2026

Same journal

Beyond a Snapshot: Tracking Family Prognostic Expectations in the ICU.

Critical care medicine·2026

Same journal

The authors reply.

Critical care medicine·2026

Same journal

Plasma Levels of Soluble ST2 Reflect Extrapulmonary Organ Dysfunction and Predict Outcomes in Acute Respiratory Failure: Beware of Potential Confounders.

Critical care medicine·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jan 3, 2026

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Published on: January 29, 2018

The authors reply

Heeyoung Lee¹, Gee Young Suh, EunYoung Kim

¹Department of Clinical Pharmacy, College of Pharmacy, Gachon University, Incheon, South Korea Division of Pulmonary and Critical Care Medicine, Department of Critical Care Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Republic of Korea Evidence-Based and Clinical Research Laboratory, Department of Health, Social and Clinical Pharmacy, College of Pharmacy, Chung-Ang University, Seoul, Republic of Korea, Division of Hospital Clinical Pharmacy, Graduate School of Food and Drug Administration, Chung-Ang University, Seoul, Republic of Korea, and Division of Licensing of Medicines and Regulatory Science, Graduate School for Pharmaceutical Industry Management, Chung-Ang University, Seoul, Republic of Korea.

Critical Care Medicine

|November 19, 2019

Summary

No abstract available in PubMed .

More Related Videos

Analysis of Circadian Photoresponses in Drosophila Using Locomotor Activity

Analysis of Circadian Photoresponses in Drosophila Using Locomotor Activity

Studying Aggression in Drosophila fruit flies

Studying Aggression in Drosophila fruit flies

Published on: February 25, 2007

Related Experiment Videos

Last Updated: Jan 3, 2026

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Published on: January 29, 2018

Analysis of Circadian Photoresponses in Drosophila Using Locomotor Activity

Analysis of Circadian Photoresponses in Drosophila Using Locomotor Activity

Studying Aggression in Drosophila fruit flies

Studying Aggression in Drosophila fruit flies

Published on: February 25, 2007