Happy #MicroscopeMonday with 🧠 and 🫁 from a bobcat! This bobcat was diagnosed with highly pathogenic avian influenza: 🧠 has lymphohistiocytic encephalitis with neuronal necrosis and 🫁 has interstitial pneumonia with alveolar edema and a thrombus in that vessel in the middle. Classic HPAI in a Felid!
Happy #MicroscopeMonday ft a bat wing with Pseudogymnoascus destructans aka the fungal agent that causes White Nose Syndrome. This fungal agent has wiped out large colonies of bats within North America in the last twenty years. It was introduced from Europe by spelunkers in the early 2000s. 🦇🦇🦇🦇
Happy #MicroscopeMonday ft trematodes and their eggs in big brown bat intestine! 🦇🦇🦇
Parasites are not uncommon in Wildife and it is important to discern if it is a problem or not. In this case, there does not appear to have been weight loss nor damage to the intestine so they are incidental.
Happy #MicroscopeMonday featuring normal histology of a big brown bat wing! 🦇
In bats affected with white nose syndrome, we would look for the fungal causative agent, Pseudogymnoascus destructans, in the wing membranes and grade the level of damage affecting them! Big brown bats can be resistant!
Cross-section of a Kalanchoe marnieriana leaf, with what appears to be emerging but dormant foliar embryo near the top.
Kalanchoe marnieriana in a pot.
#MicroscopeMonday Cross-section of a Kalanchoe marnieriana leaf, with what appears to be emerging but dormant foliar embryo (a dome) near the top.
Kalanchoe marnieriana is a facultative cloning plant, which normally does not produce plantlets but do produce plantlets when leaves are detached.
Happy #MicroscopeMonday 🔬with ranavirus in a barred tiger salamander spleen! There is necrosis with characteristic eosinophilic inclusion bodies! This disease is caused by multiple different viruses 🦠; this one is likely Ambylostoma Tigris virus causing mass mortalities in N. American salamanders!
Happy #MicroscopeMonday 🔬with renal coccidiosis in a juvenile snow goose 🪿! Most likely an Eimeria species, this parasite has a complicated life cycle to the kidneys. Typically, this is asymptomatic but heavy parasitism can cause death is due to renal failure.
#waterfowldiseases #parasitology
Happy #MicroscopeMonday! See the little parasite in this 🦦 🧠? It’s tiny; likely a Sacrocystis neurona or Toxoplasma gondii! Can be difficult to distinguish histologically without molecular or staining techniques! Both can cause severe fatal meningoencephalitis in southern sea otters! 🦦 🔬
Happy #MicroscopeMonday! This is a sarcocyst in a bald eagle heart 🦅🫀
Sarcocystis sp. are relatively common in wildlife species with variability on mortality. Can be deadly if the animal is immunosuppressed and migrates to the brain 🧠 causing severe inflammation and necrosis.
Been a minute! Will return to #MicroscopeMonday and #SkullSaturday soon! Started the new job working in wildlife pathology so been busy!!
Brightfield image of a ~2-month-old Holothuria poli juvenile taken using an inverted microscope, showing developing buccal tentacles, transparent tissues, and ossicles arranged in a floral-like pattern.
Getting the hang of #MicroscopeMonday 🔬
Meet Polly - a ~2-month-old Holothuria poli juvenile with transparent tissues and floral-patterned ossicles.
I work on H. tubulosa, but this tiny H. poli turned up in a lab mate's samples and is now our lab mascot - at least until a tubulosa appears 👀
Happy #MicroscopeMonday! 🔬
Spleen from an anole 🦎 with pigmented macrophage hyperplasia!
Pigmented macrophages are a common cell type seen in reptiles, amphibians, and fish! Pigmented macrophage hyperplasia is extremely common in geriatric reptiles but could be seen with immune stimulation.
Very delayed #MicroscopeMonday but presenting the Epigonal organ of a freshwater ray!
Epigonal organ is a particular organ of elasmobranchs (sharks, skates, and rays) that is associated lymphoid and reproductive function!
It is attached to the ovary or testes of the cartilaginous fish! 🦈
Forgot to do #MicroscopeMonday yesterday!!
Impression smear from a fish spleen with a white nodule grossly
This is an acid-fast cytology stain highlighting acid-fast bacilli consistent with Mycobacteria species!
Many of this genus affect fish particularly in the M. marinum group!
🐟🔬🦠
Two side-by-side microscope images of the same early auricularia larva (Holothuria tubulosa): brightfield on the left and DAPI-stained nuclei in blue on the right, with a 0.1 mm scale bar.
First #MicroscopeMonday contribution!
Early auricularia larva of Holothuria tubulosa (4 days post-fertilisation, dpf) shown in brightfield (left) and with DAPI-stained nuclei (right, blue). Same larva. Same view.
Bonus: this was also my first DAPI stain, imaged on an inverted microscope.
It isn't #Microscopemonday but it was certainly Microscope Friday today at the Fall @nesmicroscopy.bsky.social meeting.
Was awesome catching up with fellow microscope people from forever ago and meeting new people today and all those in between.
Very much looking forward to the next one. Yay 🔬
Microscope image showing retinal #neurons for #MicroscopeMonday 🔬
#sciart #science #visionscience #stemcells #glaucoma #blindness #biology #visionhealthmonth
Happy #MicroscopeMonday! This video from an aging pond sample showcases Paramecium, some cysts of hypotrich ciliates (likely Oxytricha), and a mat of Zooglea bacteria at the end.....
Motic BA310e 20X Objective/ LabcamUltra/iPhone15
#iteachbiology #microscope #edusky #science #nature
A microscope image of a biocytin-filled neuron floating about in a brain slice. The background is dark and the cell body, and few proximal dendrites are seen in yellow.
I missed the chance to post last Friday, so here is my #MicroscopeMonday contribution of a floating neuron from my #ephys slices. (indeed this is from the LC, no, not a NE cell)
Using retinal organoid model to enrich for retinal ganglion cells (the cell type commonly affected/lost in glaucoma) 👁️ #glaucoma #glaucomaawareness #glaucomaawarenessmonth #visionresearch #organoids #stemcells #sciart #microscopemonday
Retinal organoid section showing retinal ganglion cells labeled in green 👁️ #glaucoma #glaucomaawareness #glaucomaawarenessmonth #visionresearch #organoids #stemcells #sciart #microscopemonday
When you're over the Holiday hullabaloo and are trying to find some peace and quiet, but there's just no hiding! #MicroscopeMonday
#riverfly #sample #ID #takeaguess #entomology
For today's #MicroscopeMonday it's double trouble.
#riverfly #sample #ID #takeaguess #entomology
A small round structure. In the centre are red blobs which are red blood cells in the lumen. Roughly circular around the lumen are a spiral arrangement of elongated purple blobs, the nuclei of smooth muscle fibers. Around the outside are orange fibrous structures, the connective tissue surrounding the blood vessel. The rest of the field are filled with orange-pink wisps, the remains of the cell membranes of fat cells.
A small artery imbedded in adipose tissue.
The first comment has some cells and tissues marked with an asterisk. How many are you able to identify?
#microscopemonday #histology #cells
Image of French Compound Monocular Brass Microscope, ca. 1875
French Compound Monocular Brass
Microscope, ca. 1875
#MicroscopeMonday
Caledonite and linarite, two hydrated copper sulphates from Leadhills, South Lanarkshire. This is the type locality for caledonite (and a bunch of other minerals including scotlandite and lanarkite). From the NMS mineral collection. #MineralMonday #MicroscopeMonday
