Site Search

This activity guides the analysis of a published scientific figure from a study that compared the testosterone levels of Olympic-level elite athletes.

This activity explores images of planarians regenerating missing body parts, which serve as phenomena for learning about cell division and differentiation.

This short video explores how a baby’s microbiome is established during birth.

This activity guides the analysis of a published scientific figure from a study on how social status affects the expression of genes involved in immune system processes.

This activity analyzes a published scientific figure from a study assessing if the microbiota from a mother affects the immune systems of the developing offspring.

This video describes how scientists silence different genes in regenerating planaria to study the process of regeneration at the molecular level.

This demonstration models the first step of the HIV life cycle: the binding of HIV envelope proteins to receptors on human helper T cells.

This activity explores an image of early embryonic cells, which serves as a phenomenon for learning about cell division and development.

This animation shows how a region of the brain called the cerebral cortex develops in a human fetus.

This animation tracks how the human brain develops over nine months of gestation.

This animation shows how varying concentrations of a signaling molecule activate different transcription factors to determine cell fate.

This video shows real footage of a cytotoxic T cell killing a cell infected by a pathogen.