microsection

From micro- +‎ section.

microsection (plural microsections)

1. A very small section
   • 2015 July 2, Santiago Roura et al., “The role and potential of umbilical cord blood in an era of new therapies: a review”, in Stem Cell Research & Therapy‎^[1], volume 6, →DOI:

     Representative images show a the fetal face of a placenta from which an umbilical cord grows as a flexible, spongy-looking, tube-like structure usually around 55 cm or 2 feet, b a transversal section of umbilical cord showing two arteries (A) and one vein (V), and c a Masson’s trichrome staining of a complete umbilical cord microsection.

microsection (third-person singular simple present microsections, present participle microsectioning, simple past and past participle microsectioned)

1. To divide into small sections