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 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.

Allergic Reactions

Allergic Reactions

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!

Proofreading

Proofreading

Proofreading

Proofreading

Synthesis of new DNA molecules is carried out by the enzyme DNA polymerase, which adds nucleotides on the daughter strand complementary to the template DNA strand. DNA polymerase has a higher affinity to add the correct base and ensures fidelity during DNA replication. Furthermore, it exhibits proofreading activity during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.
Errors During Replication are Corrected by the DNA Polymerase Enzyme

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.

You might also read

Related Articles

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

Sort by

Same author

Global Perspectives of Oral Health Policies and Oral Healthcare Schemes for Older Adult Populations.

Frontiers in oral health·2022

Same author

Association between traditional oral hygiene methods with tooth wear, gingival bleeding, and recession: A descriptive cross-sectional study.

Indian journal of dental research : official publication of Indian Society for Dental Research·2018

Same author

Age estimation of living Indian individuals based on aspartic acid racemization from tooth biopsy specimen.

Journal of forensic dental sciences·2017

Same author

A Novel Conservative Approach Combining "SealBio" and "Surgical Fenestration" for Healing of Large Periapical Cystic Lesions of Endodontic Origin: A Pilot Study.

Contemporary clinical dentistry·2017

Same author

Prevalence of dental caries and periodontal disease in a rural area of Faridabad District, Haryana, India.

Indian journal of dental research : official publication of Indian Society for Dental Research·2017

Same author

Comparative evaluation of tooth substance loss and its correlation with the abrasivity and chemical composition of different dentifrices.

Indian journal of dental research : official publication of Indian Society for Dental Research·2017

Same journal

Influence of the restoration after pulpotomy on the strength of electrical stimulus reaching the pulp space: An <i>in vitro</i> investigation.

Journal of conservative dentistry : JCD·2023

Same journal

Flexural strength and microhardness of human radicular dentin sticks after conditioning with different endodontic chelating agents.

Journal of conservative dentistry : JCD·2023

Same journal

A confocal laser scanning microscopic evaluation of nonthermal atmospheric plasma on the dentinal tubule penetration of bioceramic and epoxy resin-based root canal sealers.

Journal of conservative dentistry : JCD·2023

Same journal

Comparison of single and multiple file rotary endodontic instruments for debris and irrigant extrusion: An <i>in vitro</i> study.

Journal of conservative dentistry : JCD·2023

Same journal

Comparative evaluation of canal transportation and canal centering ability in oval canals with newer nickel-titanium rotary single file systems - A cone-beam computed tomography study.

Journal of conservative dentistry : JCD·2023

Same journal

Tooth substance loss after incisal endodontic access and novel single-tooth template-guided endodontic access in three-dimensional printed resin incisors with simulated pulp canal calcification: A comparative <i>in vitro</i> study.

Journal of conservative dentistry : JCD·2023

See all related articles

Search research articles

Related Experiment Video

Updated: May 24, 2026

An In Vitro Approach to Photodynamic Therapy

An In Vitro Approach to Photodynamic Therapy

Published on: August 17, 2018

Author's reply

¹Department of Conservative Dentistry and Endodontics and Chief, Center for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India.

Journal of Conservative Dentistry : JCD

|February 28, 2012

Summary

No abstract available in PubMed .

Related Experiment Videos

Last Updated: May 24, 2026

An In Vitro Approach to Photodynamic Therapy

An In Vitro Approach to Photodynamic Therapy

Published on: August 17, 2018