They have identified that genes belonging to a process called autophagy, which is one of the cells most critical survival processes, promote health and fitness in young worms but drive the process of ageing later in life. (uni-mainz.de)
Because young worms and low worm burdens do not generate enough antigen to result in a positive test result, the AHS recommends the use of the more accurate «no antigen detected» language, rather than a reporting of a «negative» result. (heartwormsociety.org)
Young worms seek out and infect snails, shellfish, etc. where the cycle continues. (marksdailyapple.com)