One of my readers sent me some videos of microscopy of some faecal preparations recorded on his iPhone and using a homemade and very cheap adapter (these adapters will otherwise set you back at least $80). I thought that was pretty cool, and one of the videos is quite good and useful to those who'd like to see what Blastocystis looks like through the microscope. It's not always easy to confirm the presence of a parasite by just looking at a video, but in this case I was pretty sure, although the spherical structures seen in the beginning of the video might as well be fat cells (in direct preparations you don't get rid of faecal fat and debris, which makes detection and identification of parasites much more complicated, and this is - I believe - a direct smear using one drop of iodine and one drop of safranin). As you can see there is a large variation in the size of Blastocystis - something that you commonly see even within the same isolate - and you can also see that some of the cells differ in terms of the uptake of iodine and safranin; cells that have taken up iodine are much darker (brownish) in colour due to iodine staining of starch, and cells that have taken up safranin have red nuclei. Try to pause the video around 1:02, and you'll see these differences quite clearly. Enjoy!
Btw: If you want to make an adaptor yourself, maybe review the following piece of information that I got from the reader:
Btw: If you want to make an adaptor yourself, maybe review the following piece of information that I got from the reader:
Adapters are easy to make, you just need an empty tea box (I used this one http://www.dovetalecollections.com/ uploads/products/o//D3851.jpg) and then simply draw around the eye pieces on the back and cut them out, then on the front cut out an area above the left hand piece you cut out for the back (so the iPhone camera can see through it). Then simply put a few match sticks in the front of box where you would like the camera to sit. Then just insert the box over both eye pieces (which makes it stable) and put the iPhone on top - easy! The size of the that tea box is perfect as it is the right distance from the eye piece to the camera lens.
