Blue sperm cells on a dark blue background. Scientists take one step closer to developing a biological male contraceptive.
| 3 min read
A safe biological birth control strategy for men has eluded scientists for many years. Now, an understudied enzyme brought them a step closer.

sperm

A sperm and oocyte with a DNA double helix in the background

How Sperm Regulate Offspring Health

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Fast-Acting Nonhormonal Male Birth Control Prevents Pregnancy in Mice

Artist’s rendition of the molecular structure of a ribosome (blue and purple) as it produces a polypeptide chain (red) from an mRNA template (orange and gray), with tRNA molecules (dark purple) shuttling amino acids.

Specialized Sperm Ribosomes Are Key to Male Fertility in Mice

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Corals Upend Longstanding Idea About Genetic Inheritance

A small brown crustacean with white spots on it moving on a red branch.

Seaweed Has Its Own Matchmakers: Small Crustaceans

Trichaptum abietinum growing on a pine log

Caught on Camera

Image of sperm hooks (<em>Peromyscus maniculatus</em>)

The Mystery of the Mouse Sperm Hook

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Evolutionary Ecologist Matthew Gage Dies at 55

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Rat Sperm Generated from Stem Cells

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Our Favorite Cell and Molecular Biology Stories of 2021

One hand holds a white envelope with a blue and red striped border, while a second hand places a clear sheet of plastic inside with small squares of paper on it

Freeze-Dried Mouse Sperm Sent by Postcard Produces Baby Mice

The Epigenetic Origins of Allergy and Asthma

The Scientist Speaks Ep. 15 - The Epigenetic Origins of Allergy and Asthma

Unearthed: World’s Oldest Animal Sperm—And It’s Giant

Women’s Cervical Mucus Prefers Some Sperm Over Others 

Image of the Day: Scrambled Frog Eggs

Human Testicles Contain Endocannabinoid System Components

Image of the Day: Synchronous Spawning

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Image of the Day: Motile Swimmers

Image of the Day: Sperm Donors

Image of the Day: Self-Insemination

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Universe 25 Experiment

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What Is Gene Doping in Sports, and How Can Experts Detect It?

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Why Are Breast Cancers That Metastasize to the Brain Hard to Treat?

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Scientists Find Their Voices to Rally Support for Research

Multimedia

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Improving Cell Therapy Sterility Testing

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The Computer-Assisted Retrosynthesis Revolution

Merck
May digest 2025 cover
May 2025, Issue 1

Study Confirms Safety of Genetically Modified T Cells

A long-term study of nearly 800 patients demonstrated a strong safety profile for T cells engineered with viral vectors.

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TaqMan Probe & Assays: Unveil What's Possible Together

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Meet Aunty and Tackle Protein Stability Questions in Research and Development

Meet Aunty and Tackle Protein Stability Questions in Research and Development

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Detecting Residual Cell Line-Derived DNA with Droplet Digital PCR

Detecting Residual Cell Line-Derived DNA with Droplet Digital PCR

Bio-Rad
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Making Real-Time PCR More Straightforward

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