![Image](https://c1.staticflickr.com/5/4214/35459416495_fa54a60323_b.jpg)
Unstained spores (aeciospores), 100x objective, bright field illumination:
![Image](https://c1.staticflickr.com/5/4266/35459416135_56571f6bc4_b.jpg)
Spores in lactophenol cotton blue, 100x objective, oblique illumination (notice light-blue stained spore "shells" that are almost invisible without staining):
![Image](https://c1.staticflickr.com/5/4284/34617714654_8b36eb9f61_b.jpg)
Empty spore "shells" (probably immature spores), 100x objective, oblique illumination:
![Image](https://c1.staticflickr.com/5/4262/35459416305_c364320ee6_b.jpg)