1、The samples are preserved in cedar wood oil and sealed with a coverslip to preserve specimens and prevent contamination. 2、Highly transparency optical glass slides, easy to observe, non-toxic, smooth edge, no danger of accidentally hurting hands. 3、There are labels on each slide to identify specimens, no more confusing mix-up, easy for users to organize the slides by species. 4、Includes 100 slides of a variety of specimens including insects, plants and animal tissues for basic biological science education. 5、Comes in a durable plastic case to prevent breakage.A good collection of slides, can be used as a gift for biological research beginner. Features: 1.The samples are preserved in cedar wood oil and sealed with a coverslip to preserve specimens and prevent contamination. 2.Highly transparency optical glass slides, easy to observe, non-toxic, smooth edge, no danger of accidentally hurting hands. 3.There are labels on each slide to identify specimens, no more confusing mix-up, easy for users to organize the slides by species. 4.Includes 100 slides of a variety of specimens including insects, plants and animal tissues for basic biological science education. 5.Comes in a durable plastic case to prevent breakage.A good collection of slides, can be used as a gift for biological research beginner. Specifications: Item Type: Prepared Biological Section Slide Set Material: Optical Glass Slides + Plastic Case Size of Case: 20*16*3.5cm/7.9*6.3*1.4inch Package List: 1* Plastic Case 100* Biological Section Slide Includes: 1 Root tip of plant L.S. 2 Young root of plant T.S. 3 Corn stalk  l.S. 4 Stem of monocotyledon T.S. 5 Stem of xylophyta dicotyledon T.S. 6 Lower epiderm of leaf of horsebean W.M. 7 Penicillium W.M. 8 Microzyme W.M. 9 Aspergillus W.M. 10 Leaf of Jasminum nudiflorum T.S. 11 Letter "e" W.M. 12 Apical bud L.S. 13 Stem of dicotyledon T.S. 14 Actinomycets W.M. 15 Chlamydomonas W.M. 16 Three types of Bacteria 17 Leaf of Pinus T.S. 18 Seed of Castor sec 19 Meiosis of Grasshopper sec. 20 Lymph node sec. 21 Polliondium of Funaria  L.S. 22 Archegonium of Funaria L.S. 23 Protonema of Funaria W.M. 24 Sporophyll of Pteridium sec. 25 Funaria leaf 26 Funaria 27 Pollen germination  W.M. 28 Ovary of Lilium T.S. 29 Matuer anther of Lilium T.S. 30 Volvox W.M. 31 Agaricus sec. 32 Seed of Zea mays L.S. 33 Epiderm of Allium W.M. 34 Spirogyra W.M. 35 Rhizopus W.M. 36 Hydra sec. 37 Zygote of Ascarid lumbricoide W.M. 38 Earthworm T.S. 39 Conjugation  of Paramecium caudatum W.M. 40 Binary fission  of Paramecium caudatum W.M. 41 Rotifer 42 Fibrillation earthworm W.M. 43 Taenia 44 Schistosoma japonicum (male) W.M. 45 Schistosoma japonicum (female) W.M. 46 Female Worms T.S. 47 Pollen-carrying leg of Honeybee W.M. 48 Mouthpart of Honeybee W.M. 49 Mouthpart of Housefly W.M. 50 Mouthpart of Butterfly W.M. 51 Mouthpart of Mosquito W.M. 52 Mosquito larvae W.M. 53 Kelp sec. 54 Simple squamous epithelium sec. 55 Stratified squamous epithelium sec. 56 Dense connective tissue (Tendon L.S.) sec. 57 Loose connective tissue W.M. 58 Blood of Human smear 59 Skeletal muscle L.S. 60 Smooth muscle islolated W.M. 61 Cardiac muscle sec. 62 Neurcytes islolated W.M. 63 Skin of Human (show hair follicle) sec. 64 Skin of Human (show sweat gland) sec. 65 Spinal cord T.S. 66 Motor end plate W.M. 67 Corpus  ventriculi sec. 68 Kidney of L.S. 69 Artery and vein sec. 70 Intestine of  T.S. 71 Ciliated epithelium of gill  T.S. 72 Lung sec. 73 Kidney of  sec. 74 Testis T.S. 75 Ovary of  sec. 76 Sperm of smear 77 Epithelium cells of cavitas oris of Human W.M. 78 Cyclops w.m. 79 Root tip of Allium cepa  L.S. 80 Mitosis of animal sec. 81 Cleavage stage of egg of Frog sec. 82 Gastrula stage of egg of Frog sec. 83 Blastula stage of egg of Frog sec. 84 Cotton Fibre W.M 85 Euglena 86 Simple-cell of egg of Frog sec. 87 2-cell of egg of Frog sec. 88 Early gastrula stage of egg of Frog sec. 89 Lichen sec. 90 Young embryo of Capsella bursa-pastoris sec. 91 Mature embryo of Capsella bursa-pastoris sec. 92 Lily pollen 93 Ant 94 Daphnia 95 Nematodes 96 Cotton leaf 97 Onion skin 98 Berry hair 99 Pollen 100 Rice leaf