This is the 13780th most frequent Korean word.
마이크로시스틴은
"마이크로시스틴은" refers to "microcystin," a toxin produced by certain freshwater cyanobacteria.
In this sentence, '마이크로시스틴은' acts as the subject of the sentence, with the topic particle '은' marking it for contrast or focus, thereby emphasizing the toxicity of microcystin.
마이크로시스틴은 매우 독성이 강합니다.
Microcystin is highly toxic.
Here, '마이크로시스틴은' serves as the topic of the sentence, introducing the subject responsible for the action of contamination.
마이크로시스틴은 호수의 물을 오염시킬 수 있습니다.
Microcystin can contaminate the lake's water.
In this context, '마이크로시스틴은' specifies the substance of interest, microcystin, regarding its seasonal presence, and the topic particle '은' highlights the general observation about microcystin.