Halloween 2012 makes trick or treating more visual and interactive than in past years.

the download is a ZIP file containing three files.

Print out the (unnumbered) image on as large and nice printer paper as possible - I used glossy 44" wide here in Miami (University of Miami, MillerSchool of Medicine, Calder Library, Biomedical Communications dept - I also made another print on "fabric", also 44" wide to take with me to an HHMI Janelia Farm conference on 'turning images into knowledge' that ends on Oct 31 - might stay up for a second conference, "GFP..." that start Nov 4).

The other image, has numbers on each "Jack O'Lantern" - this can be printed on a regular printer (of course nicer ink, fancier glossy paper will help).

The Word document is a survey table - I recommend typing in your and your friends, colleagues, family members, famous celebrities, etc, to the survey sheet and print that out. Of course you could go "second sheet" if necessary, and print out an extra (no names) sheet for "write-ins". (I recommend against using any politician names).

About the original image ... These are cell nuclei stained with a fluorescent dye called DAPI. The natural color is a light blue, but for Halloween, I used Photoshop to change to an orange color more like pumpkins (I did not try very hard for color matchng). Nucle are different sizes because of (1) biology, and (2) some were acquired with a 40x objective lens and others with a 63x objective lens.