Keri Martinowich
@martinowk.bsky.social
Director, Translational Neuroscience at Lieber Institute and Professor, Johns Hopkins School of Medicine studying molecular regulation across species in circuits impacted in complex brain disorders. Native plants/flowers/wetland habitats. Own opinions.
For the #NativePlants feed - fall color 🍂 on leaves of American sycamore (Plantus occidentalis)
November 13, 2025 at 1:21 PM
For the #NativePlants feed - fall color 🍂 on leaves of American sycamore (Plantus occidentalis)
Sign of my procrastination
November 12, 2025 at 1:45 AM
Sign of my procrastination
Admission is also free! But, if you give a donation and have kids in tow, they give some food to feed the fish in the tropics part of the botanical garden. Totally worth it if you are in town!
November 10, 2025 at 1:40 AM
Admission is also free! But, if you give a donation and have kids in tow, they give some food to feed the fish in the tropics part of the botanical garden. Totally worth it if you are in town!
Was embarrassed to have never been after being here so many years - Rawlings Conservatory definitely lives up to the hidden gem definition, especially the Orchid Room 🤩
November 8, 2025 at 11:25 PM
Was embarrassed to have never been after being here so many years - Rawlings Conservatory definitely lives up to the hidden gem definition, especially the Orchid Room 🤩
Arrival of chilly weekend mornings = start of my puzzle season
November 8, 2025 at 1:35 PM
Arrival of chilly weekend mornings = start of my puzzle season
For #FluorescenceFriday - one of my favorites from the archives of a neuron ⚪ and astrocyte 🟢 co-culture. Image credit to Stephanie Page and former research assistant Beth Pattie 🧠🔬🧪
November 7, 2025 at 12:37 PM
For #FluorescenceFriday - one of my favorites from the archives of a neuron ⚪ and astrocyte 🟢 co-culture. Image credit to Stephanie Page and former research assistant Beth Pattie 🧠🔬🧪
Hippocampus masquerading as a 🦇 for Halloween 🎃
#FluorescenceFriday
Image credit to the @lieberinstitute.bsky.social Microscopy and Spatial Biology Core 🧠🔬🧪
#FluorescenceFriday
Image credit to the @lieberinstitute.bsky.social Microscopy and Spatial Biology Core 🧠🔬🧪
October 31, 2025 at 12:31 PM
Hippocampus masquerading as a 🦇 for Halloween 🎃
#FluorescenceFriday
Image credit to the @lieberinstitute.bsky.social Microscopy and Spatial Biology Core 🧠🔬🧪
#FluorescenceFriday
Image credit to the @lieberinstitute.bsky.social Microscopy and Spatial Biology Core 🧠🔬🧪
Just the regular!
October 30, 2025 at 2:23 AM
Just the regular!
An individual common milkweed seed pod has about 200 seeds. Thinking about the many tens of thousands of seeds me and the wind are conspiring to release in the next few weeks is a pleasant thought ;) #NativePlants 🌱
October 28, 2025 at 12:45 PM
An individual common milkweed seed pod has about 200 seeds. Thinking about the many tens of thousands of seeds me and the wind are conspiring to release in the next few weeks is a pleasant thought ;) #NativePlants 🌱
These images of a tissue block face are part of an ongoing effort to map the molecular neuroanatomy of human 🧠 basal ganglia & basal forebrain structures at high resolution 🔬🧪. You can totally get lost staring at these - human 🧠 organization is fascinating.
October 28, 2025 at 12:34 PM
These images of a tissue block face are part of an ongoing effort to map the molecular neuroanatomy of human 🧠 basal ganglia & basal forebrain structures at high resolution 🔬🧪. You can totally get lost staring at these - human 🧠 organization is fascinating.
Both the leaves 🍁 and the berries are amazing on Viburnum nudums in Fall. Birds love these berries so much though that they are often completely picked over by the time color changes #NativePlants 🌱
October 26, 2025 at 8:55 PM
Both the leaves 🍁 and the berries are amazing on Viburnum nudums in Fall. Birds love these berries so much though that they are often completely picked over by the time color changes #NativePlants 🌱
Panicled Aster (Symphyotrichum lanceolatum) still popping out blooms solidly into Fall. #NativePlants 🌱
October 26, 2025 at 8:46 PM
Panicled Aster (Symphyotrichum lanceolatum) still popping out blooms solidly into Fall. #NativePlants 🌱
Double posting for #FluorescenceFriday today, because I am in love w/ this particular astrocyte (marked w/ GFAP in 🔴) that is sitting in dorsal anterior cingulate cortex in the human 🧠. Image credit to Staff Scientist/image analyst Maddy Tippani and JHU grad student @shkwon-bcmbneuro.bsky.social 🔬🧪
October 24, 2025 at 2:35 PM
Double posting for #FluorescenceFriday today, because I am in love w/ this particular astrocyte (marked w/ GFAP in 🔴) that is sitting in dorsal anterior cingulate cortex in the human 🧠. Image credit to Staff Scientist/image analyst Maddy Tippani and JHU grad student @shkwon-bcmbneuro.bsky.social 🔬🧪
For #FluorescenceFriday - projection neurons from the mouse prefrontal cortex to the locus coeruleus 🔴 with Fos labeling activated cells 🟢. Image credit to the Circuits team in the Translational Neuroscience Division @lieberinstitute.bsky.social 🧠🔬🧪
October 24, 2025 at 11:45 AM
For #FluorescenceFriday - projection neurons from the mouse prefrontal cortex to the locus coeruleus 🔴 with Fos labeling activated cells 🟢. Image credit to the Circuits team in the Translational Neuroscience Division @lieberinstitute.bsky.social 🧠🔬🧪
Fittingly eerie - low, dark clouds rolling in over Monocacy battlefield
October 20, 2025 at 10:04 AM
Fittingly eerie - low, dark clouds rolling in over Monocacy battlefield
For #FluorescenceFriday - human iPSC-derived cerebral organoid - labeled w/ MAP2🟢, CTIP2🔴, PAX6⚪, Hoechst🔵 from our Molecular Neurogenetics team. Image credit to @tsawada1.bsky.social and JHU Human Genetics grad student Bailey Spiegelberg 🔬🧠🧪
October 17, 2025 at 5:17 PM
For #FluorescenceFriday - human iPSC-derived cerebral organoid - labeled w/ MAP2🟢, CTIP2🔴, PAX6⚪, Hoechst🔵 from our Molecular Neurogenetics team. Image credit to @tsawada1.bsky.social and JHU Human Genetics grad student Bailey Spiegelberg 🔬🧠🧪
And it turned into this about 40 mins later on paddle back, which was also so pretty!
October 15, 2025 at 1:15 PM
And it turned into this about 40 mins later on paddle back, which was also so pretty!
After a few days of gray, wind and rains from the storm, very pretty sunrise this morning was a welcome respite 🌅
October 15, 2025 at 12:22 PM
After a few days of gray, wind and rains from the storm, very pretty sunrise this morning was a welcome respite 🌅
Super excited about this ongoing spatial transcriptomics study in locus coeruleus of human 🧠. Expression of norepinephrine neurons - TH🔴, DBH🟢 and SLC6A2🟡 overlaid on post-Xenium H&E stain, allowing correlation of neuromelanin content (brown pigment) w/ gene expression #FluorescenceFriday 🔬🧪
October 10, 2025 at 3:33 PM
Super excited about this ongoing spatial transcriptomics study in locus coeruleus of human 🧠. Expression of norepinephrine neurons - TH🔴, DBH🟢 and SLC6A2🟡 overlaid on post-Xenium H&E stain, allowing correlation of neuromelanin content (brown pigment) w/ gene expression #FluorescenceFriday 🔬🧪
Also, re: the glossiness of those berries - yes, it is really striking. I have a Winterberry (Ilex verticillata) right near that plant also with amazing fruit set this year, but with them close together struck me how glossy the Chokeberry was.
October 8, 2025 at 1:53 PM
Also, re: the glossiness of those berries - yes, it is really striking. I have a Winterberry (Ilex verticillata) right near that plant also with amazing fruit set this year, but with them close together struck me how glossy the Chokeberry was.
Tiny first touch of Fall 🍂🍁
October 5, 2025 at 10:58 PM
Tiny first touch of Fall 🍂🍁
Fruit set on the Red chokeberries (Aronia arbutifolia) was excellent this year, leaving lots of these glossy red berries. #NativePlants 🌱
October 5, 2025 at 11:27 AM
Fruit set on the Red chokeberries (Aronia arbutifolia) was excellent this year, leaving lots of these glossy red berries. #NativePlants 🌱
I call it High tide bush - lots of names though - Groundsel tree, Salt bush, sea-myrtle (Baccharis halmifolia), but whatever you call it, it’s characteristic wispy blooms are a sure sign of Fall’s approach #NativePlants 🌱
October 4, 2025 at 3:50 PM
I call it High tide bush - lots of names though - Groundsel tree, Salt bush, sea-myrtle (Baccharis halmifolia), but whatever you call it, it’s characteristic wispy blooms are a sure sign of Fall’s approach #NativePlants 🌱
For #FluorescenceFriday - simple image, but structure of hippocampus is beautiful with additional fanfare. 🟢 is Fos - labeling cells that get activated in response to disinhibition of inhibitory neuron subpopulation in the prefrontal cortex. Image credit to JHU Neuroscience student Aaron Salisbury.
October 3, 2025 at 1:09 PM
For #FluorescenceFriday - simple image, but structure of hippocampus is beautiful with additional fanfare. 🟢 is Fos - labeling cells that get activated in response to disinhibition of inhibitory neuron subpopulation in the prefrontal cortex. Image credit to JHU Neuroscience student Aaron Salisbury.
Masses of New England asters in bloom now (Symphyotrichum novae-angliae) #NativePlants 🌱
October 2, 2025 at 12:15 AM
Masses of New England asters in bloom now (Symphyotrichum novae-angliae) #NativePlants 🌱