Ruptured capillary. Coloured scanning electron micrograph (SEM) of a red blood cell squeezing out of a torn capillary. A capillary is the smallest type of blood vessel, often only just large enough for red blood cells to pass through. Red blood cells (erythrocytes) are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells. Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Colored scanning electron micrograph (SEM) of squamous cell carcinoma (cancer) cells from a human mouth. The many blebs (lumps) and microvilli (small projections) on the cells' surfaces are typical of cancer cells.
Do you struggle to find on-level informational texts for your students to read? These Life Cycle Articles come in two formats (two-page with photos and one page with just text) and include QR Codes for additional research via web sites and videos, and a Fact Sheet useful for sorting. These are perfect for second grade and third grade classrooms studying life cycles in science.