T.S. of leaf (E. crassipes) stained with methylene blue.

T.S of leaf shows a single layer of the epidermal cells with very thin cuticle. The mesophyll is differentiated into palisade and spongy parenchyma. Two types of vascular bundles are present, larger and smaller. Each vascular bundle is surrounded by a bundle sheath cells.

T.S of Cycas leaflet stained with safranin and fast green

The image shows the epidermis, hypodermis and vascular bundle region. Upper epidermis surrounded by a layer of cuticle. Below the upper epidermis, sclerenchymatous hypodermis region is present. Mesophyll is differentiated into palisade and spongy parenchyma. A single vascular bundle present, showing xylem and phloem.

T.S. of root of Eichhornia crassipes stained with methylene blue.

The image shows the epidermis, cortex and vascular bundle. Single layered epidermis followed by hypodermis region. Outer and inner cortex is made up of parenchymatous cells. Each air space has trabeculae. Stele is surrounded by endodermis and pericycle. Vascular bundle showing xylem, phloem and pith.

Post-storm Crissy Field East Beach anomalies

After a brief but substantial night storm in the bay we headed to East Beach to see what might have washed up on the shores before the tide came and returned it all to the depths. We found many sponges and dislodged kelp, the ever present plastics, and other large common drift. We also found…

The Unfolding of Cell Biology

Cells were first discovered by Robert Hook in 1665, who described the building blocks of life as little rooms in which monks lived. Robert Hook witnessed dead plant cells present in cork; it took many years and numerous studies to describe the internal structures of the cell and define Cell Theory. Cell Theory states all…

TURCICUM LEAF BLIGHT OF MAIZE

The section showing Conidia of Exserohilum turcicum which cause turcicum leaf blight in maize. Observed under foldscope from ICAR-NOFRI ,SIKKIM

A Tour through Nature

The image is a blade of grass viewed under a foldscope. The sample of grass was obtained on the grass field near the wedding cake building (adjacent to Baxter) on Wednesday May 15, 2019 at 3:02 pm. The blade of grass was obtained by carefully plucking it off the field. A small part of the…

Human Skin Cell Observation Using Foldscope.

The human skin is the outer covering part of the body. The human skin has up to seven layers of ectodermal tissue. Human skin is similar to the mammals skin. Human skin plays an important role in protecting the body against pathogens.

CORNEAL SCRAPING

New comment on your post “CORNEAL SCRAPING IVE VIDEO” Author: Manu Prakash (IP address: 205.154.255.130, 205.154.255.130) Email: manup@stanford.edu URL: http://www.stanford.edu/~manup Comment: Dear @Erolab, Thanks for sharing the video. Can corneal scrapings be done in the field? What classes of eye infections are often detected this way? A few tips on slide making for foldscope. in…

Foldscope Observations: Plants and Insects

1: This is a picture of the magnified image seen from the foldscope of a dead leaf. The leaf appears brownish. The sample was obtained from a fallen leaf from a tree outside of Dabney courtyard at 13:10, May 16. We picked up the leaf from the grass and cut off a fragment to use…

Cape Town Science Centre (CTSC) Foldscope Workshops

This Saturday at the Cape Town Science Centre I held the first in a series of workshops for hands-on STEM workshops at the Cape Town Science Centre. Young students and their parents were invited to join in on the DIY origami fun, exposing kids to a low-cost tool to which they were able to see…

Extra Foldscope Photos

Collaborators: Happy Chang (Wenjun Chang), Catharine Long (Xiaoqi Long). Tip of an oak leaf On May 16th, 13:10 PM, we collected an oak leaf under the oak tree outside Dabney Hall at California Institute of Technology. We cleaned the leaf, took the tip of this fallen, brownish-yellow tree, and made it into a sample. The…

Foldscope Extra Credits

What: Tip of a fallen, brownish-yellow leaf When: May 16th 13:10 PM Where: under the tree outside of Dabney courtyard How: grabbed it from the grassSpecies: Quercus agrifolia 2. What: Petal of a white flower Time: May 16th 13:10 PM Where: lawn between Parson and Dabney How: grabbed it from the grassSpecies: Geranium wilfordii Maxim…

Foldscope made it to a big family meeting

We used to gather in every opportunity to meet and share the love and enjoy the good time all together with delicious meals. But this time’s reason was different! I wanted to change the routine and take advantage of being part of this big family. Guess what the topic was FOLDSCOPE 🙂 So I called…