What type of cell it is?

That’s a good idea.

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Hi, this is a TmY15 neuron. :slight_smile:

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no idea what cell this might be it look a bit like a Tlp type but the axonal part is way too long, it could also be a Y type. Also part of the arborisation is in the medula instead of lobula plate as excpected

https://ngl.flywire.ai/?json_url=https://globalv1.flywire-daf.com/nglstate/5680198053789696

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https://ngl.flywire.ai/?json_url=https://globalv1.flywire-daf.com/nglstate/4944449956216832

I’m stumped in multiple ways here, folks.

  • Cell body not found, but assumed to be in the medulla cortex ala Tm/TmY neurons.
  • Cannot find a second arbor branch
  • Arbor is similar to a DM4 type, very self loopy

neurons with a cell body in the distal medulla cortex terminating exclusively in the lobula plate do
not exist.
-Fischbach

I would expect this to perhaps be a Tlp if not for the axon into the medulla; Y type if a lobula branch was found (and there was arborization in the medulla).

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Wow! Indeed interesting. Even assuming, there are mergers and many missing pieces (which, I think, is not true), still, I have never seen such arborization in LP. Closest I could find is an Lpi, but only if we take the LP part into consideration.

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Oh you know, it might be an LPi3-4 based on Annkri’s tab in the Google Sheet. I am not as familiar with them!

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interesting, i cant find CB either but somehow id expect it to autofwhatsemacallit from the backbone lol…obvs not bc its not there went up and down the whole thing and nada, neither in the loop de loop part near the dendrites…

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what kind of cell is this, maybe a Lpi type have also looked at a lpt type, but it lack the distictive branch going into central brain
https://ngl.flywire.ai/?json_url=https://globalv1.flywire-daf.com/nglstate/5021914791673856
Skjermbilde 2022-08-26 kl. 08.44.01

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i agree with it beeing a LPi 3-4, but do not know where cb is either

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ive seen those around yeah, from ur pic it reminds me shape wise of a dm cell from pic in here: Optic Lobe Cell Catalog - FlyWire Blog

Judging by the look, it should have to be an Lpi. After all, Lpi stands for Lobula Plate intrinsic and this one is definitely intrinsic to the Lobula Plate.
I’d say, the dendritic parts of the synapses are in layer 3 (however, the dendritic branches start in layer 4). The axonal parts are probably in layer 4. So it should be an Lpi3-4. The only thing, that doesn’t match is the position of the CB.
According to FlyBase: “A lobula plate intrinsic neuron whose cell body is on the cell body rind of medulla.”
For Lpi4-3 it says: “A lobula plate intrinsic neuron whose cell body is on the ventral region of the cell body rind of the lobula plate.”
So my guess would be that I either misplaced or misidentified dendrites and axons and it is in fact Lpi4-3.

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Yes, that’s probably it. FlyBase says: “It has presynaptic terminals in layer 4 and postsynaptic ones in layer 3.” And it you look closely, there are indeed finer dendritic (postsynaptic) terminals in layer 3 and more “fat” bleb-type axonal (presynaptic) terminals in layer 4. It also has (probably) its CB in the Medulla rind.

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bases on the examples i have seen Lpi 3-4 and Lpi 4-3 should look alike except having synapses on different layers

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I would thought so. I’m just citing, what that other site says.

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What type is this? 1st time im seeing one of these:
https://ngl.flywire.ai/?json_url=https://globalv1.flywire-daf.com/nglstate/5076884492648448

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Probably one of the Lpi cells

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Could this be a new type of a T cell or some Y cell?

https://ngl.flywire.ai/?json_url=https://globalv1.flywire-daf.com/nglstate/6714356209287168
(two of similar shape in the link)

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The purple cell in your link i’d say is one of the T cells that the axon doubles back to CB (or almost does)


A subvariant of T3 perhaps?

For the green cell in your link I’d wager a guess on either T2I (roman numeral for 1 seeing as a b c is taken) or a T2c, my reasoning being its axon resembles more of T2a but its dendrites resemble more of T2. My reason for not thinking this a (new) subvariant of Y is that the second dendrite stalk if im not mistaken in Y’s begins closer to the CB stalk rather than to the dendrite ending(s).

I’ve also completed a few of both/either purple and green, if you’re not ‘bored’ searching/shifting through almost 2000 cells FlyWire they’ll al be in here (plus a lot of completed cells which arent completed by me but i keep in the farm to know not to keep clicking on them lol). The layer I’m going through in this farm is primarily C’s, Ts and some axon-less cells near the edges of the left part of the lobe (twisty turny cells). So perhaps since I’ve found them near other T cells they also are T subvariants? Idk if that logic applies in here like it does in eyewire though (amacrine layer, ganglion layer and so on).

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Yeah, I think, both of them can be a variant of T2, because their medulla part goes through almost all the layers, like T2 and T2a. T3’s are much shorter.

Maybe I’ll go through all that cells, but first I have to finish my small “farm”. I like to take a bundle and do all the cell in such. Currently have one with over 250 cells, lol.
But yeah, similar types tends to be close to each other or in the same layers, so that’s possible, that many T’s keep together.

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Got a couple where I can’t find already labeled versions anywhere -

My guesses are -

TmY8
https://ngl.flywire.ai/?json_url=https://globalv1.flywire-daf.com/nglstate/5569214446305280

TmY1
https://ngl.flywire.ai/?json_url=https://globalv1.flywire-daf.com/nglstate/5483784996651008

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