The 50Pcs prepared microscope slides include six types of plants, insects, animals, human tissues, fish, cells.The slides are made of high quality optical glass and are easy to focus under microscopes at different magnifications, suitable for for young scientist, students, kids;ideal for basic biological education science research. View under a compound microscope 50Pcs Microscope Slides Catalog List Microscope Slides List Special Instructions: WM (W.M.)：Whole Mount (Entire Specimen or Organism)LS (L.S.)：Longitudinal Section. A section cut lengthwise. Cut parallel to the longitudinal axis.CS (C.S.)：Cross-Section. Such as a thin wafer of an Earthworm. Cut perpendicular to the longitudinal axis. TS (T.S.)：Transverse. An alternative name for cross-section.Sec:Section Sm/Smear:SmearSq:Squashed preparation 50Pcs Microscope Slides Prepared 100Pcs Microscope Slides Prepared Add to Cart Add to Cart Customer Reviews 4.6 out of 5 stars 27 4.5 out of 5 stars 154 Price $29.89$29.89 $42.99$42.99 Total 50 pcs 100 pcs Plants 25 pcs 43 pcs Insects 15 pcs 17 pcs Human Being Tissue & Cell 4 pcs 25 pcs Fish 4 pcs 2 pcs other Animals 2 pcs 6 pcs Microorganism 0 pcs 7 pcs Difference Slides for common fruits and vegetables insects fish birds Slides for schools or lab, including plants,insects, animal, cells, microbes and human tissue slides Fit Children,basic teaching, those who are going to learn biology or are interested in biology especially fish/plants/insects Students and Teachers at High School,College, Junior High School School, contains a variety of sample slides needed for biological learning