Fun with Foldscopes!

Today in our ecology class lab at Princeton we used Foldscopes to investigate the world around us. I stuck the slide sticker to my skin in order to collect material from my skin. It was initially challenging to find an image, but with some patience and tinkering I was able to get a great picture…

Posterior Spircale of Chrysomia species

DBT Foldscope scheme “Foldscope for diagnosis of rumen acidosis and parasitic infections in cattle” Here’s a beautiful and detailed picture of the processed Posterior Spiracle of a Chrysomya larvae which was collected from an infected wound of a cow. The steps involved are: The larvae was boiled in 10% NaOH for about 5 mins and was thoroughly…


Fungi observed through foldscope. We can easily see observe sporangium and spore (conidia) structures through foldscope.  

Pollen grain of Lily flower

Pollen grains contain male gametes. When the pollen lands upon the female stigma of another Lily flower, the pollen grain germinates. A tube grows out of the pollen grain through the stigma; the male nuclei pass down this tube and fuse with the female ovules.

Observed Euchlanis Rotifer under Foldscope

Euchlanis is a genus of the microscopic invertebrates known as rotifers. Sometimes alternatively referred to as wheel-animalcules, rotifers feature a characteristic circular arrangement of cilia at their front ends that are reminiscent of a turning wheel when they are in motion. In addition to a ciliated corona, or head, Euchlanis species have transparent bodies and two strong toes…

Proboscis of a Moth.

Moths have very long proboscis, or tongues, which they use to suck nectar or other fluids. These proboscis are very tightly coiled when not in use, like a hosepipe. When in use, the proboscis are uncoiled to their full length and in some species, that length is remarkably long.

Stool sample

Stool sample of 10 months old child no parasite or ova is seen in this stool sample, slide is prepare by using Kato-katz technique and observed under Foldscope from R D Gardi Medical College, Ujjain

Feather of Peacock

We observed the feather of peacock under foldscope and learned about the cells of rachis. The feather consist of  Vane, Rachis, Barbs and Hollow shafts. The rachis contains pith, which is composed of air-filled keratinised epithelial cells surrounded by a solid keratinised outer cortex. … Barbs: The series of branches fused to the rachis, constituting the major surface area of…

Head part of Mosquito Larvae

The head of the mosquito larva is basically prognathous. The mouthparts, therefore, are considered as anterior appendages. The mandibles and maxillae exhibit a wealth of taxonomic characters that, unfortunately, are not extensively used in mosquito taxonomy. A lateral palatal brush (mouth[/no-lexcion] brush) is borne anteriorly on either side of the mouth. In most larvae, the brushes consist…

Polytene Chromosome from salivary glands of Chironomus Larvae

Polytene chromosomes are giant chromosomes common to many dipteran (two-winged) flies. They begin as normal chromosomes, but through repeated rounds of DNA replication without any cell division (called endoreplication), they become large, banded chromosomes.  Polytene chromosomes are usually found in the larvae, where it is believed these many-replicated chromosomes allow for much faster larval growth than if the cells remained…

Observed live Chironomus Larvae under Foldscope

Chironomidae, also known as Chironomids, belongs to phylum Arthropoda “. Larval stages are found in almost any aquatic or semiaquatic habitat. Larvae are bright red in color due to presence of hemoglobin; these are frequently known as “bloodworms”. Observed the thoracic basal ring of the larvae.

Aspirin Crystals Under Polarized Light

I have always been interested in polarized light and wondered if the foldscope could be made to incorporate it. Knowing nothing about optics, I was pretty sure that the viewing situation would be too compressed for this to work…but I still wanted to try. I purchased two plastic, linear polarizing sheets from Edmonds Optics.  I…


Trichomes serve a variety of functions, depending on their location. As root hairs (and as leaf hairs in epiphytes), trichomes absorb water and minerals. As leaf hairs, they reflect radiation, lower plant temperature, and reduce water loss. They also provide defense against insects.

Workshop for “Foldscope”

Workshop for "Foldscope" conducted in a government higher secondary school jethal (rural area of ujjain) by the team of R D Gardi Medical College, Ujjain

Multiple helminth load

Multiple helminth eggs as seen under foldscope using kato-katz method. The sample was observed from five year old child admitted in Department of Pediatrics R D Gardi Medical College, Ujjain

Mosquito Larvae

Mosquito Larvae, you can see movement that drive circulation as seen under foldscope from the Department of Pediatrics R D Gardi Medical College, Ujjain