Cord blood, genetic diversity and the search for a match
Why patients of mixed or non-European ancestry face longer odds of a matched adult donor, and how cord blood and half-matched transplants changed that.
Helen Marchetti
Helen ran cell-culture and cryostorage benches in academic labs for over a decade before moving into science writing. She covers stem cells, cord blood and regenerative medicine, and is happiest explaining why a promising result in mice is not yet a treatment.
Pieces by Helen
Skin aging: what the evidence supports, and what it does not
How skin ages from the inside and the outside, and how strong the evidence really is for sunscreen, retinoids, vitamin C, lifestyle and stem cell creams.
What makes a stem cell a stem cell
Stem cells are defined by what they do, not by how they look. A plain guide to self-renewal, potency, niches and blood stem cells.