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.

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

Allergic Reactions

Allergic Reactions

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

Impact of trimester-specific nutrition counseling on maternal vitamin D status, and perinatal outcomes in India: a quasi-experimental cohort study.

BMC public health·2026

Same author

First-trimester two-hour post-challenge glucose and HbA1c as early predictors of gestational diabetes mellitus: A prospective cohort study.

The Indian journal of medical research·2026

Same author

Vitamin D Status and Calcium Homeostasis in Mother and Newborn Dyad: A Hospital Based Study from South Delhi.

Indian journal of endocrinology and metabolism·2026

Same author

Hospital Hyperglycemia is Associated with Adverse Short-term Metabolic and Mortality Outcomes.

The Journal of the Association of Physicians of India·2026

Same author

Correlation of meconium-stained amniotic fluid with subclinical chorioamnionitis and associated cardiotocographic changes.

Tropical doctor·2026

Same author

Comparative Assessment of Quality of Life and Serum S100B in Epilepsy Treated with Newer and Conventional Drugs: A Pharmacoeconomic Perspective.

Journal of epilepsy research·2025

Same journal

Prevalence of Infertility in South Asia: A Systematic Review and Meta-Analysis.

Journal of human reproductive sciences·2026

Same journal

Psychological, Psychosocial and Economic Factors Affecting Infertile Couples Visiting a Rural Tertiary Care Hospital: A Cross-sectional Study.

Journal of human reproductive sciences·2026

Same journal

Help-Seeking Behaviour and Care Delays in Indian Patients Attending a Speciality Sexual Health Clinic: A Retrospective Cohort study.

Journal of human reproductive sciences·2026

Same journal

Comparison of the Effect of Ketofol and Ketodex as Procedural Sedation and Analgesia for Oocyte Retrieval during <i>In vitro</i> Fertilisation Procedures: A Randomised Controlled Pilot Study.

Journal of human reproductive sciences·2026

Same journal

Psychological Morbidity (Stress, Anxiety and Depression) and Fertility Quality of Life amongst Infertile Women with and without Polycystic Ovary Syndrome (PCOS): A Cross-sectional Study.

Journal of human reproductive sciences·2026

Same journal

Editorial Commentary.

Journal of human reproductive sciences·2026

See all related articles

Search research articles

Related Experiment Video

Updated: May 24, 2026

Light/dark Transition Test for Mice

Light/dark Transition Test for Mice

Published on: November 13, 2006

Authors' reply

Pikee Saxena¹, Anupam Prakash, Aruna Nigam

¹Department of Obstetrics and Gynecology, Lady Hardinge Medical College and Smt. Sucheta Kriplani Hospital, New Delhi, India.

Journal of Human Reproductive Sciences

|February 21, 2012

Summary

No abstract available in PubMed .

Related Experiment Videos

Last Updated: May 24, 2026

Light/dark Transition Test for Mice

Light/dark Transition Test for Mice

Published on: November 13, 2006