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It would be nice if the bookmark's tip were placed exactly where the cursor's index finger points. Currently, that position corresponds to the bookmark's top side (the round part)

Currently, seems to be unavailable. Would it be possible to keep it visible after pressing the space bar?

Follow these steps to reproduce (macOS with several different browsers, not sure about Windows):

1. open a slide
2. click on the "Show/hide description" button to hide the sidebar
3. grab one of the browser window's edges to change its size

A blank space matching the sidebar width instantly appears on the right and stays there until you press the show/hide button again.

The scale bar seems too wide to me. Based on it, the cell membrane and the intermediate filaments are estimated to have a thickness of about 2 nm. Also, look at the extracellular space in the desmosome.

The structure highlighted in blue here is not a macula adherens (or desmosome).

Personally, I would use the singular (gap junction) to indicate an area of membrane packed with connexons.

in most cases, especially when using small devices (e.g., mobile phones), it is preferable to have as much screen real estate as possible.

Right-clicking on the side notes seems to trigger the bookmark-placing function, which is probably wrong. Either bookmarks are placed in a position that is hidden from view or the "Bookmarks can only be placed over the image" notice is shown, depending on the current zoom factor

A few problems with this slide's side notes.

1. since the text describes muscle insertions directly into the periosteum, why is the title "Muscle Tendon Insertion"?
2. isn't the periosteum a type of irregular connective tissue?
3. the endomysium surrounds (note the third person) each muscle cell, not the muscle as a whole
4. the last sentence is ambiguous because the term "fibers" could refer to collagen fibers in the endomysium but also to muscle fibers (i.e. cells)

I cannot seem to be able to reach this slide from the search page:

https://histologyguide.org/slideview/MHS-277-278-skin/11-slide-1.html

According to the side notes, both specimens belong to a monkey tibia.
Please note, however, that while cortical bone in the transversal section is ~2 mm-thick, the longitudinal section is more than twice as thick.
I find this difference confusing.

This is what the bottom-right side of the toolbar looks like in Safari (v.16.0) for macOS (v. 12.6):

Chrome and Firefox do not have this issue

The info for this slide seems wrong.

to reproduce:

1. place one or more bookmarks
2. hide them
3. pan/zoom to a different slide location
4. show the bookmarks

See this short clip for a demonstration

See for example 086b (scalp)
They could be replaced with pointers.

The text on this page is partly redundant (articular surfaces of bone vs. epiphyseal plates). Consider changing to:

Hyaline cartilage contains type-II collagen fibers and a highly hydrated ground substance. It is the most common cartilage and is found on articular surfaces, walls of the respiratory system (trachea and bronchi), and portions of the rib cage.

This opening sentence may need revising:

This virtual slide box contains 307 microscope slides for the learning histology.

MHS-282: clicking on "Muscularis mucosae" in the side notes leads to an empty location

I have been assuming that all virtual slides were acquired using either a 40x or a 60x objective, and that's what "magnification" in the Microscope Slide Information panel really means. Correct?

If so, experienced observers implicitly understand that the "40x" label indicates the magnifying power of the objective used for the digital scan, which has little to do with the actual magnification of the image on a computer screen.

On the other hand, I suspect that the term "magnification" may be confusing for many first-year medical students.

I would consider rewording, e.g. OBJECTIVE (or acquisition objective) instead of MAGNIFICATION in the Microscope Slide Information panel.

The last sentence in the side notes of the cat colon slide.

Bookmark placement seems to be inhibited within a small area surrounding an existing bookmark, while the "hand" cursor is visible (i.e. in its "normal" state)

• MH 091bhr Thick Ski
• MH 094hr Parotid

In both slides, the "60x" magnification option appears to be missing in the toolbar

This slide is attributed to a human parietal bone:

But obviously, this applies to the right-hand side sample.
Is the origin of the long bone cross-section on the left known?

Typing "esc" does not zoom out to the lowest possible magnification on macOS (reproduced on a MacBook Air and a Mac Studio, with both Chrome and Safari)