Reproductive Biology Articles | Early Pregnancy Science

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Fertilization and early cell division - woman at beach

Pregnancy

Fertilization and Early Cell Division Explained

Fertilization is the biological moment when a sperm cell and an oocyte (egg cell) combine to form the first cell of a new organism. It is often described as the beginning of embryonic development.

Paolo Piatti, PhD

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Apr 28, 2026

First 10 days after conception - couple watching sunset

Pregnancy

What Happens in the First 10 Days After Conception

The first days after conception are quiet, hidden, and biologically remarkable. Long before a pregnancy test can turn positive, a fertilized egg is already dividing, moving, and preparing for what comes next.

Paolo Piatti, PhD

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Apr 28, 2026

Pregnancy

Hormonal Regulation of the Menstrual Cycle Introduction

The menstrual cycle is often treated like a clock. In reality, it’s more like a conversation - one shaped by hormones, timing, and signals between the brain, ovaries, and uterus.

Paolo Piatti, PhD

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Apr 28, 2026

Ovulation timing - woman looking at sunset

Pregnancy

Ovulation: Timing, Signals, and Biological Variability

Ovulation is the event that makes pregnancy possible. But it’s often misunderstood.

Paolo Piatti, PhD

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Apr 27, 2026