Letâs look at ferns as an example of alternation of generations. The fern plants you see out in the woods, or in a garden, or by a river are sporophytes. They produce spores. If you turn over a fern frond (thatâs just a fancy word for leaf), sometimes youâll see little circles all over the underside of the leaf.
Tricyclic Antidepressant (TCA) Overdose. California Poison Control 1-800-876-4766. Pediatric considerations. Low toxicity threshold of TCAs. Therapeutic doses range from 2-4 mg/kg/d. Toxicity is observed at doses of 10-20 mg/kg. Ingestion of only two 50-mg tablets in a 10-kg toddler can be sufficient. to produce symptoms of toxicity.
What is a TCA Peel? Having been used for more than 20 years, the TCA peel is a non-toxic chemical peel. TCA stands for trichloroacetic acid which is considered a relative of vinegar. This particular type of chemical peel is considered to be one of the strongest available, with a strength in the range of 5% and 50%.owever, as with any procedure, it is important that you understand what a TCA peel is, how it works, what skin conditions is it meant to treat and its potential side effects. As with any treatment, talk to your dermatologist or skin care specialist before committing to a TCA peel or any other chemical peel.