ANAT2241 The Virtual Microscope
|ANAT2241 This practical support page content is not part of the science practical class and provides only background information for student self-directed learning purposes. These new pages are also under ongoing development during Semester 1 2015. Coordinator notice|
- 1 General Objective
- 2 Learning Activity
- 3 Introduction
- 4 What are Virtual Slides?
- 5 Virtual Slides Computer Requirements
- 6 Electron Microscopy
- 7 Course Links
An introduction to the use of the virtual microscope.
Specific Objective and Learning Activities
To learn the correct use of virtual microscopy using computers and to employ various virtual histological databases for enhancing learning as well as for revision purposes.
In Histology, you are expected to study the features of histological preparations as virtual images, which were scanned from real stained sections, which were mounted on glass slides and listed in the Learning Activities. In these classes you may encounter structures and terminology not defined in lectures. You will need to read about these structures in your textbooks.
Read sections in your course manual on General Hints on Staining Procedures and Routine Staining Protocols.
For background information on using the virtual microscope see The Virtual Microscope - Support Tutorial
Histological sections, which are slices of tissue usually from 5 - 8µm thick (see Dimensions below), can be examined efficiently as follows:
- Use the Slide Catalogue in your course handbook to determine:
- The animal from which the section is taken.
- The stains used (thereby defining the colours of the major tissue components). Note that stains are not examinable.
- Low power sketches or notes made may help you to remember the main histological features of a section, e.g., which major tissue components are present.
- Note the 2-D shapes in the section and the major tissue components present and try to determine the approximate 3-D shape of the whole organ from which the section was taken. Is the section cut randomly through the organ? Is there an obvious lumen in the section?
- XS - cross section
- TS - transverse section
- LS - longitudinal section
- LM - light microscope or light micrograph
- EM - electron microscope, or electron micrograph
- 2-D = 2-dimensional
- 3-D = 3-dimensional
1mm = 103 micrometres (µm) = 106 nanometres (nm)
A micrometre is often called a "micron" (µm); 1µm = 10-6m
- Unaided eye - approx. 0.1 mm = 100µm
- Light microscope - approx. 0.1 µm = 100nm
- Electron microscope - approx. 1 nm
What are Virtual Slides?
High magnification scanned digital images of tissue sections on glass slides acquired using a x40 microscope lens stored in a multi-resolution file format and viewed in a web browser window with software capacity to “click and drag” and “zoom in” on the image, which simulates the examination of glass slides with a real microscope, but with the added benefits of always having optimal focus and contrast, with orientation maintained and avoiding section-to-section variability. This allows all students to examine the same scanned tissue section.
This 15 minute video tutorial will take you through the organization and basic controls of the Virtual Microscope.
|Transcript - Virtual Slide Tutorial|
The following text is an approximate transcript for the UNSWTV video tutorial "Using the Virtual Microscope"
| Hi There
Welcome to the support tutorial for UNSW courses using "The Virtual Microscope".
In particular ANAT2241 Histology - Practical 1 An introduction to the virtual microscope.
This current tutorial does not go through practical class content but will help you both use and understand "The Virtual Microscope" controls.
Have your practical manual ready with pens and pencils to make both notes and drawings as you work through the class materials. You may also choose to keep notes on your own computer as you work through the class.
From the Practicals table select practical 1 "The Virtual Microscope"
If you are on your own computer or outside UNSW a log in message will appear
"To access the Virtual Slides from outside UNSW, please log in."
The log in screen will appear. Enter your student number and zpass.
The first time you log in, then the the default Virtual Slides welcome will open. You can then go through your course portal to each practical class.
This time you should go directly to your practical page.
This current tutorial ail not go through practical class content but will introduce the "The Virtual Microscope" controls.
In practical classes, ensure you
You will need to allocate sufficient time to looking through all these slides during the practical class, unless the demonstrator advises otherwise.
You will also see from the whole slide thumbnail:
Note that the slide sequence will usually match that in your practical manual and may also be the order that they will be demonstrated. Other histological resources and materials outside virtual slides may also be used in your classes.
Note - This tutorial will not discuss this tissue, only the controls used to change its viewing.
Click a slide thumbnail.
Please read note about Computer Requirements
A new browser page will open with the slide tissue visible in 2 windows.
All Virtual slides will have this same initial layout, but tissues may open at different initial magnifications.
Always observe the whole section before making any changes to the magnification.
For your own reference purposes, it may be useful to either take a screenshot or drawing of this initial view and any useful future view. Screenshots can be imported into a number of programs that allow you to add your own annotations (labels, notes, arrows or boxes).
Under the thumbnail image are a number of image controls (contrast and magnification) initially visible, and a location control not visible.
The black and white box relates to image contrast and the slider located beside it.
Dragging the black triangle to the left, decreases contrast. Making the image darker.
Dragging the black triangle to the right, increases contrast. Making the image lighter.
You can change the contrast on any virtual slide, the demonstrator will often suggest if this is required for optimal viewing.
Under the contrast controls are 2 magnifying glass icons and a drop-down window with a number shown.
When you click the "+" (green plus) icon:
When you click on this window the menu opens and a range of magnification values are now available to be selected. The overall magnification range may vary for different slides but the maximum available for any slide 40x, some only reaching 20x.
When a magnification is selected it will automatically zoom centred on the current view.
The location of your view can be changed in both the main and thumbnail windows. This control is not immediately visible and requires you to "click and drag" over the image.
Main window - when you left click the mouse, a hand will appear and you can now drag the slide image to a different location. Note the righthand thumbnail yellow and black box will also change to match the viewed location.
Thumbnail window - when you left click the mouse, a arrows appear over the yellow and black box and you can now drag the slide image to a different location.
The demonstrator will be using the same virtual slides displayed on the class projectors and monitors.
Follow the demonstrators descriptions closely (they know the material).
--Mark Hill 15:24, 21 February 2013 (EST)
Flash Player will not function on any Apple iPad (iPad or mini-iPad). It can function on their laptop and desktop computers.
Virtual slides requires a Flash Player (Adobe) plug-in to be installed in the browser application and will not function without this player.
All practical class computers have this player installed.
If you are using your own desktop or laptop computer this plug-in may need to be installed before virtual slides will display. Ensure that you are downloading and installing the latest player and only from the official Adobe website.
Virtual Slides Computer Requirements
- Virtual slides requires a Flash Player (Adobe) plug-in to be installed in the browser application and will not function without this player.
- Flash Player will not function on any Apple iPad (iPad or mini-iPad). It can function on their laptop and desktop computers.
- Note - all online practical support pages will display on any computer, tablet (including iPad) and mobile phone platform capable of running a web browser.
- All practical class computers have this player installed.
- If you are using your own desktop or laptop computer this plug-in may need to be installed before virtual slides will display.
- Ensure that you are downloading and installing the latest player version and only from the official Adobe website (http://get.adobe.com/flashplayer).
- Note - you should also be using the latest available browser software.
- If you install this plug-in yourself you may need to shutdown and restart the browser application before it will function.
EM appearance and structure of: nucleus, nucleolus, nuclear envelope, nuclear pore, mitochondria, endoplasmic reticulum (smooth & rough), ribosomes, Golgi apparatus, lysosomes, microtubules, microfilaments, plasma (cell) membrane, microvilli, stereocilia, cilia, and junctional complexes.
(Stain - Osmium) used as the main staining technique for electron microscopy.
|Cilia and microvilli on respiratory epithelium. (scanning EM)||Cilia cross-sections showing microtubules. (EM)|
- Histology Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ANAT2241 Support | Histology | Histology Stains | Embryology Glossary
- Pages require student zpass to access.
ANAT2241 Virtual Slides 1 The Virtual Microscope 2 Covering and Lining Epithelia 3 Glandular Epithelia 4 Connective Tissue Components 5 Connective Tissue Types 6 Blood 7 Bone and Joints 8 Muscle 9 Nervous 10 Cardiovascular 11 Respiratory 12 Integumentary 13 Gastro-Intestinal I 14 Gastro-Intestinal II 15 Liver, Gallbladder, and Pancreas 16 Lymphatic Tissue and Immune 17 Endocrine 18 Urinary 19 Female Reproductive 20 Male Reproductive 21 Special Sense The Eye
- Pages can be accessed from any internet connected computer.
ANAT2241 Support Links: The Virtual Microscope | Covering and Lining Epithelia | Glandular Epithelia | CT Components | CT Types | Blood | Bone, Bone Formation and Joints | Muscle | Nervous | Cardiovascular | Respiratory | Integumentary | GIT 1 | GIT 2 | GIT Organs | Lymphatic and Immune | Endocrine | Urinary | Female Reproductive | Male Reproductive | Eye | Histology Stains | Histology Drawings | Practicals Health and Safety 2013
ANAT2241 This practical support page content is not part of the science practical class and provides only background information for student self-directed learning purposes.