31. As the name suggests, the citrus gummy bark viroid causes problems in the bark of the sweet orange tree. 32. Coconut Cadang Cadang Viroid ( CCCVd ) can be confused with another viroid called Coconut Tinangaja Viroid ( CTiVd ). 33. Coconut Cadang Cadang Viroid ( CCCVd ) can be confused with another viroid called Coconut Tinangaja Viroid ( CTiVd ). 34. Coconut Cadang Cadang Viroid ( CCCVd ) can be confused with another viroid called Coconut Tinangaja Viroid ( CTiVd ). 35. The "'Australian grapevine viroid "'( abbreviated AGV ) is a type of grapevine viroid. 36. The "'Australian grapevine viroid "'( abbreviated AGV ) is a type of grapevine viroid . 37. Over thirty plant diseases have since been identified as viroid -, not virus-caused, as had been assumed. 38. Hammerhead, hairpin, and hepatitis delta virus ( HDV ) ribozyme motifs are generally found in viruses or viroid RNAs. 39. Conditions for a viroid to infect its host include wounds on the host or infected pollen grain deposited into an ovule. 40. As microbiology, molecular biology and virology developed, non-cellular reproducing agents were discovered, such as viruses and viroids .
