The causes of gender dysphoria are not yet fully understood. A personâs biological sex is determined by two chromosomes â one from the mother, and one from the father.5 Early in pregnancy, all fetuses are female because the X chromosome (which is inherited from the mother) is the only active chromosome.
Paralytic shellfish poisoning (PSP) is one of the four recognized syndromes of shellfish poisoning, which share some common features and are primarily associated with bivalve mollusks (such as mussels, clams, oysters and scallops).he toxins responsible for most shellfish poisonings are water-insoluble, heat and acid-stable, and ordinary cooking methods do not eliminate the toxins. The principal toxin responsible for PSP is saxitoxin.
Ichthyophthirius multifiliis (commonly known as freshwater white spot disease, freshwater ich, or freshwater ick) is a common disease of freshwater fish.It is caused by the protozoan Ichthyopthirius. Ich is one of the most common and persistent diseases in fish.The protozoan is an ectoparasite.White nodules that look like white grains of salt or sugar of up to 1 mm appear on the body, fins and gills. Each white spot is an encysted parasite.t is caused by the protozoan Ichthyopthirius. Ich is one of the most common and persistent diseases in fish. The protozoan is an ectoparasite. White nodules that look like white grains of salt or sugar of up to 1 mm appear on the body, fins and gills. Each white spot is an encysted parasite.