Image of mouse embryos at the 2-cell stage visualised by light microscopy. Two blastomeres (cells) can be seen inside the zona pellucida (a “shell-like” protective outer layer) of each embryo. Credit: ...

Stage 2 kidney cancer involves a tumor over 7 cm, confined to the kidney, often treated surgically. Diagnosis includes imaging, blood tests, and possibly biopsy to confirm cancer type and stage.

Transposable elements are stretches of DNA that can move around the genome. Many of these DNA sequences originate from long ago, when viruses inserted their genetic material into our ancestors’ ...