Holotrich Protozoa identification in a field setting

DBT Foldscope scheme – “Foldscope for diagnosis of Rumen acidosis and Parasitic infection in cattle”. This post is in response to Manu Prakash’s comment on our previous post (Holotrich protozoa – from Rumen fluid). Rumen fluid was collected from an healthy cow  (Figure 1) in a sterile container (figure 2).  A drop of rumen fluid was…

Haemonchus contortus

Haemonchus contortus – These blood suckers are otherwise known as Stomach worm, Barber’s pole worm, is highly economically important Strongyle of sheep and goat. The anterior ends of both males and females are similar ( figure 1). The posterior end of female, the vulva is covered by a cuticular flap ( vulval flap or vulval knob)…

Larval stages of Filarial nematodes

One milliliter of blood was mixed with nine milliliter of 2% formalin. The mixture was centrifuged at 5,000 rpm for 5 min and the supernatant was discarded. To the sediment, few drops of methylene blue solution was added. A drop of the solution was placed on slide with a cover slip above and examined under…

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Stomata under foldscope

leaf  peel was stained with safranin  for 30 sec and then observed under the foldscope and we were able to see the stomata cells.

Onion peel

Onion peel was stained with safranin  for 30 sec and then observed under the foldscope and we were able to see the cells.


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

Compound Eye of a Moth

Moths (like many other adult insects) have compound eyes and simple eyes. The Compound eyes are made up of many hexagonal lens/corneas which focus light from each part of the insects field of view onto a rhabdome (the equivalent of our retina). They have simple eyes (ocelli) which can only differentiate dark from light.

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.

Four days hands on Foldscope workshop at NCCS Pune

Workshop on foldscope was conjointly arranged by ICAR-NEH and NCMR-NCCS for MeECL school, Shillong class X students under DBT funded project at NCCS Pune. During the workshop, the students were trained for assembling the Foldscope, sample preparation and posting it on the microcosmos website. All the students came up with enthusiasm and curiosity exploring different…

Student exchange program under DBT funded project

  A group of students from Shillong visited National Centre for Cell Science, Pune under DBT funded project. Dr Krishnappa and his team made all the travel arrangements and NCCS hosted students. First day was great, students visited different facilities and interacted with the Director NCCS and Head NCMR, and assembled foldscope.

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…