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Luis AJ Alvarez

@luis-aj-alvarez.bsky.social

Physical Chemistry doctorate | Uni Paris - Orsay | Functional Imaging et al. | currently @ Leica Microsystems | opinions my own

153 Followers  |  281 Following  |  15 Posts  |  Joined: 16.11.2024  |  1.8272

Latest posts by luis-aj-alvarez.bsky.social on Bluesky

Betty Yuen-Torres and Luis Alvarez holding the AACR SpectraPlex poster

Betty Yuen-Torres and Luis Alvarez holding the AACR SpectraPlex poster

Habemus Poster πŸ™ƒ #AACR2025
Just got the printout for our SpectraPlex Poster - it is proper size for the data we wanted to fit πŸ˜‡. Come by tomorrow - section 7 board 24 poster 173 | happy to chat 3D high multiplexing imaging in cancer. Session starts at 14:00.

26.04.2025 21:02 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
#AACR25 sign in Chicago for the annual American Association Of Cancer Reseaech conference

#AACR25 sign in Chicago for the annual American Association Of Cancer Reseaech conference

@ Chicago for #AACR2025 - if you are around and want to talk microscopy just drop me a message to meet up. Also we got a running STELLARIS with SpectraPlex at the @leicamicrosystems.bsky.social booth for 15+ channels on one go at the booth

26.04.2025 13:24 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image

πŸ“£ The application deadline for #EMBLFluorescenceLifetime has been extended until 28 Apr! ✍🏼

Are you a PhD student or a postdoc with experience in fluorescence microscopy and want to enhance your skills in confocal fluorescence microscopy and lifetime-based readouts? πŸ”¬

➑️s.embl.org/lef25-01-bl

22.04.2025 13:40 β€” πŸ‘ 4    πŸ” 3    πŸ’¬ 0    πŸ“Œ 1
Cervical cancer tissue stained with PanCK-Opal 780 - Imaged on a Leica STELLARIS FALCON

Cervical cancer tissue stained with PanCK-Opal 780 - Imaged on a Leica STELLARIS FALCON

Cervical Cancer tissue - PanCK Opal780 stained - left intensity only | right Fluorescence lifetime (rainbow 0,5-1,4 ns) showing the PanCK on cyan, non specific signal blue endogenous tissue signals in red #FluorescenceFriday #FluorescenceLifetime - interested ? FLIM course in July @ EMBL 😜

11.04.2025 19:44 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

We have an amazing group of speakers and hands on sessions around Fluorescence Lifetime Imaging (multiphoton, metabolism, STED-FLIM, biosensing, Cryo, Plant imaging, multiplexing, FRET, functional dynamics and FLIM analysis.
Follow the link for program & application !

08.04.2025 18:26 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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πŸ“£Application deadline for #EMBLFluorescenceLifetime is approaching ⏰

Do you have experience in fluorescence microscopy and want to enhance your skills in confocal fluorescence microscopy and in lifetime-based readouts?

Then apply for this hands-on course by 21 April: ➑️s.embl.org/lef25-01-bl

08.04.2025 12:30 β€” πŸ‘ 15    πŸ” 11    πŸ’¬ 0    πŸ“Œ 2
3D rendering of a Zebrafish embryo showing vasculature (GFP - magenta) and endogenous fluorescence (cyan) separated through Fluorescence Lifetime Imaging

3D rendering of a Zebrafish embryo showing vasculature (GFP - magenta) and endogenous fluorescence (cyan) separated through Fluorescence Lifetime Imaging

3D rendering of a Zebrafish embryo showing vasculature (GFP) and endogenous fluorescence

3D rendering of a Zebrafish embryo showing vasculature (GFP) and endogenous fluorescence

#fluorescencefriday
#fluorescencelifetime
3D rendering Zebrafish embryo vasculature + endogenous fluorescence - intensity only (greyscale) corresponding lifetime separated (GFP - magenta | endogenous - cyan)
Interested? apply for our summer course @ EMBL in Heidelberg: www.embl.org/about/info/c...

04.04.2025 11:31 β€” πŸ‘ 7    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0

2/2 hence encoding data is a 2 channel process in tiff. A workaround is to set it in HSV colour space with the brightness value set for intensity and playing on hue and saturation for the colour. I can provide raw images but it might require additional work to sort out LUTs.

13.01.2025 07:11 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

1/2 The lifetime bit is represented on a multicolour gradient. With the standard LUT being blue|cyan|green|yellow|red. It codes for intensity + lifetime or average arrival time (AAT) on a single channel. Values from 0 to 3/4 with 2 decimals (ns) or 3 digits (ps)

13.01.2025 06:36 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

This has been my experience as well and for traditional 3-4 colour images it is always possible to find something fine when you hit 6+ and are integrating them I have not seen options that make sense - still keeping an eye out just in case πŸ™ƒ.

13.01.2025 06:29 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Application Note: TauSense: the potential of STELLARIS TauSense from Leica Microsystems is a new way to use lifetime-based information for enhanced multiplexing and functional imaging

For the classical fluorescence lifetime rainbow LUT please have a look at fig 1b here: www.nature.com/articles/d42...

12.01.2025 08:45 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
Application Note: 3D high-multiplex imaging in cancer immunology 3D multiplexed imaging in cancer immunology enables a better characterization of tissue changes and cell interactions. Here, we introduce a one-shot, high-multiplexing workflow on the STELLARIS confoc...

For the 15 colours please look at fig 3 a here : www.nature.com/articles/d42...

We tend to show subsets of markers at a time as well. Fig 3 b-g. But also fig 2 here www.nature.com/articles/d42...

12.01.2025 07:46 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Very nice ! We had some requests about colour blind alternatives for the β€œrainbow” LUT used for FLIM or to get multiple FLIM channels. I could not find a solution. Now that we can get 15 markers at once I anticipate similar question for colour blind friendly set. Any ideas ? πŸ™ˆ

10.01.2025 06:28 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0
Pithiviers pour galette des rois pour l’épiphanie | Pithiviers puffy pastry French cake for wise man for January sixth

Pithiviers pour galette des rois pour l’épiphanie | Pithiviers puffy pastry French cake for wise man for January sixth

Part de galette des rois - Chocolat + frangipane filling

Part de galette des rois - Chocolat + frangipane filling

Γ€ chocolate & Frangipane filled Pithiviers for Galette des rois for Heilige Drei KΓΆnige | l’épiphanie | best way to close the Christmas season πŸ˜‹πŸ€©. I hope your end of the year a blast.

06.01.2025 23:00 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Decorated and lighted up Christmas tree with gifts below

Decorated and lighted up Christmas tree with gifts below

35 min past midnight and every thing is set for the kids to wake up early on Christmas Day 🀣. Happy holidays to everyone and I hope you have a great time with family and friends!

24.12.2024 23:37 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Calling all #SciComm people who specialise in scientific animations. I would like to talk to someone about making some animations to communicate our research in single-molecule biophysics. Please message me if you are interested and share with your networks! πŸ§ͺ

06.12.2024 10:50 β€” πŸ‘ 11    πŸ” 9    πŸ’¬ 3    πŸ“Œ 0
15 colour beads - 0.7-0.9 ΞΌm | 405-850 nm | 50 X 75 ΞΌm image | xy view of a z stack

15 colour beads - 0.7-0.9 ΞΌm | 405-850 nm | 50 X 75 ΞΌm image | xy view of a z stack

15 colour beads from 405 to 850 nm | side view of the z-stack with a line through the middle showing optimal chromatic correction across the complete spectra. All beads perfectly centered on the focal plane

15 colour beads from 405 to 850 nm | side view of the z-stack with a line through the middle showing optimal chromatic correction across the complete spectra. All beads perfectly centered on the focal plane

15 colour beads 3D image | 2 ΞΌm z view showing all beads from 405 to 850 nm on the same z plane with close to isometric resolution

15 colour beads 3D image | 2 ΞΌm z view showing all beads from 405 to 850 nm on the same z plane with close to isometric resolution

15 colours beads on a single slide πŸ™ƒ. Fluorescence emissions from 410 to 850 nm. 0.7-0.9 ΞΌm beads | z-stack showing the side view with proper chromatic correction across all wavelengths! Imaged on a STELLARIS with an extended white light laser (WLL) and SpectraPlex #FluorescenceFriday

06.12.2024 21:49 β€” πŸ‘ 11    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

How does it look like when calibrating it expresses in bacteria ? W/o purification ? & a calibration expresses in mammalian cells ?

29.11.2024 20:43 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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