Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Longitudinal Research02:20

Longitudinal Research

13.7K
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
13.7K
Ethics in Research01:56

Ethics in Research

26.3K
Today, scientists agree that good research is ethical in nature and is guided by a basic respect for human dignity and safety. However, this has not always been the case. Modern researchers must demonstrate that the research they perform is ethically sound.
26.3K
Archival Research01:40

Archival Research

17.6K
Some researchers gain access to large amounts of data without interacting with a single research participant. Instead, they use existing records to answer various research questions. This type of research approach is known as archival research. Archival research relies on looking at past records or data sets to look for interesting patterns or relationships. For example, a researcher might access the academic records of all individuals who enrolled in college within the past ten years and...
17.6K
Cross-Sectional Research01:50

Cross-Sectional Research

13.0K
In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
13.0K
The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

4.2K
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
4.2K
Longitudinal Studies01:26

Longitudinal Studies

698
Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
698

You might also read

Related Articles

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

Sort by
Same author

From hyperkeratosis to apoptosis: lessons learned from 65 years of research.

Biology of reproduction·2012
Same author

The essentiality of the epididymal fat pad for spermatogenesis.

Endocrinology·2010
Same author

Pharmacokinetics and pharmacodynamics of Phor21-betaCG(ala), a lytic peptide conjugate.

The Journal of pharmacy and pharmacology·2008
Same author

Immune response to lytic peptides conjugated to a betaCG fragment in treated BALB/C mice.

Reproductive biology·2008
Same author

Conjugates of lytic peptides and LHRH or betaCG target and cause necrosis of prostate cancers and metastases.

Molecular and cellular endocrinology·2007
Same author

Destruction of breast cancers and their metastases by lytic peptide conjugates in vitro and in vivo.

Molecular and cellular endocrinology·2006

Related Experiment Video

Updated: Apr 21, 2026

The Replica Set Method: A High-throughput Approach to Quantitatively Measure Caenorhabditis elegans Lifespan
11:58

The Replica Set Method: A High-throughput Approach to Quantitatively Measure Caenorhabditis elegans Lifespan

Published on: June 29, 2018

10.2K

After 65 years, research is still fun.

William Hansel1

  • 1Liberty Hyde Bailey Emeritus Professor, Cornell University, Ithaca, New York 14853.

Annual Review of Animal Biosciences
|November 12, 2014
PubMed
Summary

This research spans decades of reproductive biology and cancer therapeutics. Key work includes understanding hormone regulation and developing novel cancer cell-targeting drugs.

Area of Science:

  • Reproductive Biology
  • Endocrinology
  • Oncology

Background:

  • Pioneering research in reproductive biology at Cornell University, focusing on nutrition, hormonal regulation of reproduction, and estrous cycle synchronization.
  • Continued investigation into the bovine corpus luteum and oocyte maturation, in vitro fertilization, and culture at Louisiana State University.
  • Transitioned to Pennington Biomedical Research Center to focus on cancer therapeutics.

Discussion:

  • Developed lytic peptide-gonadotropin conjugates for targeted cancer cell membrane destruction.
  • Explored the role of the hypothalamus in pituitary gonadotropin release.
  • Advanced hormone assays and estrous cycle synchronization techniques.

Key Insights:

  • Significant contributions to understanding reproductive endocrinology and corpus luteum function.
Keywords:
Autobiographycancercorpus luteumhypothalamuspituitaryprogesterone

More Related Videos

An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing
04:30

An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing

Published on: October 25, 2019

6.2K
Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans
10:08

Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans

Published on: May 18, 2022

4.5K

Related Experiment Videos

Last Updated: Apr 21, 2026

The Replica Set Method: A High-throughput Approach to Quantitatively Measure Caenorhabditis elegans Lifespan
11:58

The Replica Set Method: A High-throughput Approach to Quantitatively Measure Caenorhabditis elegans Lifespan

Published on: June 29, 2018

10.2K
An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing
04:30

An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing

Published on: October 25, 2019

6.2K
Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans
10:08

Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans

Published on: May 18, 2022

4.5K
  • Successful development of targeted cancer therapies using novel drug conjugates.
  • Long-standing dedication to advancing scientific knowledge in multiple biological fields.

    • Outlook:

    • Ongoing research into the development of targeted cancer cell drugs.
    • Continued exploration of novel therapeutic strategies for cancer treatment.
    • Commitment to scientific inquiry and discovery in biomedical research.