Genetic support of a causal relationship between cannabis use and educational attainment: a two-sample Mendelian randomization study of European ancestry
By this point, so associated with tobacco was money that even the paper currency of New Jersey, not a tobacco-growing colony, featured a tobacco leaf on its design
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Pokeweed Latin Name: Phytolacca americana Identifying Characteristics: Seedlings may have reddish underside of leaf Alternate leaf pattern Tap root Produces white flowers from July into early fall Produces berries starting out as green, then turn to purple and almost black as they mature Mature plants have red stems Can grow up to 9 ft tall Plant Longevity: Perennial Where Commonly Found: Pastures Wooded areas Fence lines Waste areas Reduced tillage fields Rich, moist soils Time of Most Concern: When berries are present Compound that Causes Concern: Saponins, believed to be the primary toxic constituents, are present in the berry juice and other parts Saponins, which are glycosides, dissolve cell membranes and cause red blood cell breakage Saponins are bitter tasting Presence of two distinct components that are different in water solubility result in detergent-like characteristics, which causes foaming in water Other toxic constituents have also been identified including the alkaloid phytolaccine (in small amounts) and the alkaloid phytolaccotoxin, as well as a glycoprotein Part of Plant Most Toxic: All parts of the plant are toxic, especially the roots, shoots, and unripe berries Toxicity of the berries decreases as they mature Livestock Species Affected: Cattle Sheep Horses Goats Swine Pasture, Stored Feed, Both: Pasture Not found in managed hay fields Clinical Signs: Vomiting Bloody diarrhea Spasms Thirst Impaired vision Respiratory paralysis Drowsiness Amount Needed to be Consumed for Clinical Signs / Death: 10 raw berries can cause serious toxic effects in adult humans 2-3 raw berries can be fatal in children Ruminants are thought to be less susceptible to the toxic effects, likely due to action of rumen flora Identifying Characteristics: Seedlings may have reddish underside of leaf Alternate leaf pattern Tap root Produces white flowers from July into early fall Produces berries starting out as green, then turn to purple and almost black as they mature Mature plants have red stems Can grow up to 9 ft tall Plant Longevity: Perennial Where Commonly Found: Pastures Wooded areas Fence lines Waste areas Reduced tillage fields Rich, moist soils Time of Most Concern: When berries are present Compound that Causes Concern: Saponins, believed to be the primary toxic constituents, are present in the berry juice and other parts Saponins, which are glycosides, dissolve cell membranes and cause red blood cell breakage Saponins are bitter tasting Presence of two distinct components that are different in water solubility result in detergent-like characteristics, which causes foaming in water Other toxic constituents have also been identified including the alkaloid phytolaccine (in small amounts) and the alkaloid phytolaccotoxin, as well as a glycoprotein Part of Plant Most Toxic: All parts of the plant are toxic, especially the roots, shoots, and unripe berries Toxicity of the berries decreases as they mature Livestock Species Affected: Cattle Sheep Horses Goats Swine Pasture, Stored Feed, Both: Pasture Not found in managed hay fields Clinical Signs: Vomiting Bloody diarrhea Spasms Thirst Impaired vision Respiratory paralysis Drowsiness Amount Needed to be Consumed for Clinical Signs / Death: 10 raw berries can cause serious toxic effects in adult humans 2-3 raw berries can be fatal in children Ruminants are thought to be less susceptible to the toxic effects, likely due to action of rumen flora Beasely et al
