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Used to distinguish new sessions and visits. This cookie is set when the GA.js javascript library is loaded and there is no existing __utmb cookie. The cookie is updated every time data is sent to the Google Analytics server.
30 minutes after last activity
__utmc
Used only with old Urchin versions of Google Analytics and not with GA.js. Was used to distinguish between new sessions and visits at the end of a session.
End of session (browser)
__utmz
Contains information about the traffic source or campaign that directed user to the website. The cookie is set when the GA.js javascript is loaded and updated when data is sent to the Google Anaytics server
6 months after last activity
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Contains custom information set by the web developer via the _setCustomVar method in Google Analytics. This cookie is updated every time new data is sent to the Google Analytics server.
2 years after last activity
__utmx
Used to determine whether a user is included in an A / B or Multivariate test.
18 months
_ga
ID used to identify users
2 years
_gali
Used by Google Analytics to determine which links on a page are being clicked
30 seconds
_ga_
ID used to identify users
2 years
_gid
ID used to identify users for 24 hours after last activity
24 hours
_gat
Used to monitor number of Google Analytics server requests when using Google Tag Manager
1 minute
_gac_
Contains information related to marketing campaigns of the user. These are shared with Google AdWords / Google Ads when the Google Ads and Google Analytics accounts are linked together.
90 days
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ID used to identify users and sessions
2 years after last activity
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Used to monitor number of Google Analytics server requests
10 minutes
I used Autodesk Sketchbook and Canva to create this histology art of the circulatory system tissues.
The first microscopic photo shows an artery and vein. Upon first glance, you would see that the artery has a thicker wall, thus a smaller lumen, than that of the vein. Arteries carry blood away from the heart to the body’s tissues and they need to withstand a lot of pressure. Veins on the other hand must have less peripheral resistance for blood to overcome the force of gravity and the reduced blood pressure.
The *microvasculature is composed of three types of the smallest blood vessels: arterioles, capillaries, and venules. These facilitate the movement of nutrients from the blood into the tissue.
The epicardium is the heart’s outermost layer of protection. The epicardium is made up of mesothelium cells, which cover and protect the majority of the body’s internal organs, as well as fat and connective tissue.